Home / 13,215.24-18,237.56-7,247.12

Finding the Fourth Proportional to 13,215.24, 18,237.56 and 7,247.12

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Solution

The fourth proportional to 13,215.24, 18,237.56 and 7,247.12 is: 10,001.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.24 : 18,237.56 = 7,247.12 : x
  2. Step 2: Convert to fraction form
    13,215.24/18,237.56 = 7,247.12/x
  3. Step 3: Cross multiply
    13,215.24x = 18,237.56 × 7,247.12
  4. Step 4: Simplify right side
    13,215.24x = 132,169,785.83
  5. Step 5: Solve for x
    x = 132,169,785.83/13,215.24
  6. Step 6: Final answer
    x = 10,001.32

Related Problems

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Half scale
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Double scale
Find fourth proportional to 13,216.24, 18,238.94 and 7,248.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.