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Finding the Fourth Proportional to 30,702.71, 42,366.72 and 17,273.68

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Solution

The fourth proportional to 30,702.71, 42,366.72 and 17,273.68 is: 23,835.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,702.71 : 42,366.72 = 17,273.68 : x
  2. Step 2: Convert to fraction form
    30,702.71/42,366.72 = 17,273.68/x
  3. Step 3: Cross multiply
    30,702.71x = 42,366.72 × 17,273.68
  4. Step 4: Simplify right side
    30,702.71x = 731,829,122.79
  5. Step 5: Solve for x
    x = 731,829,122.79/30,702.71
  6. Step 6: Final answer
    x = 23,835.98

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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.