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Finding the Fourth Proportional to 22,751.81, 31,400.04 and 12,681.17

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Solution

The fourth proportional to 22,751.81, 31,400.04 and 12,681.17 is: 17,501.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,751.81 : 31,400.04 = 12,681.17 : x
  2. Step 2: Convert to fraction form
    22,751.81/31,400.04 = 12,681.17/x
  3. Step 3: Cross multiply
    22,751.81x = 31,400.04 × 12,681.17
  4. Step 4: Simplify right side
    22,751.81x = 398,189,088.25
  5. Step 5: Solve for x
    x = 398,189,088.25/22,751.81
  6. Step 6: Final answer
    x = 17,501.43

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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.