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Finding the Fourth Proportional to 30,935.52, 42,689.52 and 17,503.20

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Solution

The fourth proportional to 30,935.52, 42,689.52 and 17,503.20 is: 24,153.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.52 : 42,689.52 = 17,503.20 : x
  2. Step 2: Convert to fraction form
    30,935.52/42,689.52 = 17,503.20/x
  3. Step 3: Cross multiply
    30,935.52x = 42,689.52 × 17,503.20
  4. Step 4: Simplify right side
    30,935.52x = 747,203,206.46
  5. Step 5: Solve for x
    x = 747,203,206.46/30,935.52
  6. Step 6: Final answer
    x = 24,153.57

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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.