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Finding the Fourth Proportional to 30,950.00, 42,711.50 and 17,520.91

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Solution

The fourth proportional to 30,950.00, 42,711.50 and 17,520.91 is: 24,179.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,950.00 : 42,711.50 = 17,520.91 : x
  2. Step 2: Convert to fraction form
    30,950.00/42,711.50 = 17,520.91/x
  3. Step 3: Cross multiply
    30,950.00x = 42,711.50 × 17,520.91
  4. Step 4: Simplify right side
    30,950.00x = 748,344,284.49
  5. Step 5: Solve for x
    x = 748,344,284.49/30,950.00
  6. Step 6: Final answer
    x = 24,179.14

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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.