Home / 13,215.55-18,237.45-7,247.32

Finding the Fourth Proportional to 13,215.55, 18,237.45 and 7,247.32

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Solution

The fourth proportional to 13,215.55, 18,237.45 and 7,247.32 is: 10,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.55 : 18,237.45 = 7,247.32 : x
  2. Step 2: Convert to fraction form
    13,215.55/18,237.45 = 7,247.32/x
  3. Step 3: Cross multiply
    13,215.55x = 18,237.45 × 7,247.32
  4. Step 4: Simplify right side
    13,215.55x = 132,172,636.13
  5. Step 5: Solve for x
    x = 132,172,636.13/13,215.55
  6. Step 6: Final answer
    x = 10,001.30

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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.