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Finding the Fourth Proportional to 30,702.92, 42,366.22 and 19,368.12

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Solution

The fourth proportional to 30,702.92, 42,366.22 and 19,368.12 is: 26,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,702.92 : 42,366.22 = 19,368.12 : x
  2. Step 2: Convert to fraction form
    30,702.92/42,366.22 = 19,368.12/x
  3. Step 3: Cross multiply
    30,702.92x = 42,366.22 × 19,368.12
  4. Step 4: Simplify right side
    30,702.92x = 820,554,032.91
  5. Step 5: Solve for x
    x = 820,554,032.91/30,702.92
  6. Step 6: Final answer
    x = 26,725.60

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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.