Home / 30,638.91-42,285.95-17,211.18

Finding the Fourth Proportional to 30,638.91, 42,285.95 and 17,211.18

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Solution

The fourth proportional to 30,638.91, 42,285.95 and 17,211.18 is: 23,753.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.91 : 42,285.95 = 17,211.18 : x
  2. Step 2: Convert to fraction form
    30,638.91/42,285.95 = 17,211.18/x
  3. Step 3: Cross multiply
    30,638.91x = 42,285.95 × 17,211.18
  4. Step 4: Simplify right side
    30,638.91x = 727,791,233.98
  5. Step 5: Solve for x
    x = 727,791,233.98/30,638.91
  6. Step 6: Final answer
    x = 23,753.82

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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.