Home / 13,215.80-18,237.94-7,247.32

Finding the Fourth Proportional to 13,215.80, 18,237.94 and 7,247.32

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Solution

The fourth proportional to 13,215.80, 18,237.94 and 7,247.32 is: 10,001.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.80 : 18,237.94 = 7,247.32 : x
  2. Step 2: Convert to fraction form
    13,215.80/18,237.94 = 7,247.32/x
  3. Step 3: Cross multiply
    13,215.80x = 18,237.94 × 7,247.32
  4. Step 4: Simplify right side
    13,215.80x = 132,176,187.32
  5. Step 5: Solve for x
    x = 132,176,187.32/13,215.80
  6. Step 6: Final answer
    x = 10,001.38

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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.