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Finding the Fourth Proportional to 27,159.68, 40,744.32 and 9,639.68

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Solution

The fourth proportional to 27,159.68, 40,744.32 and 9,639.68 is: 14,461.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,159.68 : 40,744.32 = 9,639.68 : x
  2. Step 2: Convert to fraction form
    27,159.68/40,744.32 = 9,639.68/x
  3. Step 3: Cross multiply
    27,159.68x = 40,744.32 × 9,639.68
  4. Step 4: Simplify right side
    27,159.68x = 392,762,206.62
  5. Step 5: Solve for x
    x = 392,762,206.62/27,159.68
  6. Step 6: Final answer
    x = 14,461.22

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1.5x scale

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.