Home / 11,501.28-15,866.85-7,515.47

Finding the Fourth Proportional to 11,501.28, 15,866.85 and 7,515.47

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Solution

The fourth proportional to 11,501.28, 15,866.85 and 7,515.47 is: 10,368.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,501.28 : 15,866.85 = 7,515.47 : x
  2. Step 2: Convert to fraction form
    11,501.28/15,866.85 = 7,515.47/x
  3. Step 3: Cross multiply
    11,501.28x = 15,866.85 × 7,515.47
  4. Step 4: Simplify right side
    11,501.28x = 119,246,835.17
  5. Step 5: Solve for x
    x = 119,246,835.17/11,501.28
  6. Step 6: Final answer
    x = 10,368.14

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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.