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Finding the Fourth Proportional to 30,681, 42,332.49 and 17,249.58

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Solution

The fourth proportional to 30,681, 42,332.49 and 17,249.58 is: 23,800.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,681 : 42,332.49 = 17,249.58 : x
  2. Step 2: Convert to fraction form
    30,681/42,332.49 = 17,249.58/x
  3. Step 3: Cross multiply
    30,681x = 42,332.49 × 17,249.58
  4. Step 4: Simplify right side
    30,681x = 730,217,672.85
  5. Step 5: Solve for x
    x = 730,217,672.85/30,681
  6. Step 6: Final answer
    x = 23,800.32

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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.