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Finding the Fourth Proportional to 30,847, 42,569.08 and 16,699.88

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Solution

The fourth proportional to 30,847, 42,569.08 and 16,699.88 is: 23,045.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,847 : 42,569.08 = 16,699.88 : x
  2. Step 2: Convert to fraction form
    30,847/42,569.08 = 16,699.88/x
  3. Step 3: Cross multiply
    30,847x = 42,569.08 × 16,699.88
  4. Step 4: Simplify right side
    30,847x = 710,898,527.71
  5. Step 5: Solve for x
    x = 710,898,527.71/30,847
  6. Step 6: Final answer
    x = 23,045.95

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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.