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Finding the Fourth Proportional to 10,639.51, 15,931.38 and 7,502.52

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Solution

The fourth proportional to 10,639.51, 15,931.38 and 7,502.52 is: 11,234.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.51 : 15,931.38 = 7,502.52 : x
  2. Step 2: Convert to fraction form
    10,639.51/15,931.38 = 7,502.52/x
  3. Step 3: Cross multiply
    10,639.51x = 15,931.38 × 7,502.52
  4. Step 4: Simplify right side
    10,639.51x = 119,525,584.95
  5. Step 5: Solve for x
    x = 119,525,584.95/10,639.51
  6. Step 6: Final answer
    x = 11,234.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.