Home / 10,887.28-15,020.13-7,109.24

Finding the Fourth Proportional to 10,887.28, 15,020.13 and 7,109.24

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Solution

The fourth proportional to 10,887.28, 15,020.13 and 7,109.24 is: 9,807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.28 : 15,020.13 = 7,109.24 : x
  2. Step 2: Convert to fraction form
    10,887.28/15,020.13 = 7,109.24/x
  3. Step 3: Cross multiply
    10,887.28x = 15,020.13 × 7,109.24
  4. Step 4: Simplify right side
    10,887.28x = 106,781,709.00
  5. Step 5: Solve for x
    x = 106,781,709.00/10,887.28
  6. Step 6: Final answer
    x = 9,807.93

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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.