Home / 30,838.76-42,557.56-16,691.70

Finding the Fourth Proportional to 30,838.76, 42,557.56 and 16,691.70

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Solution

The fourth proportional to 30,838.76, 42,557.56 and 16,691.70 is: 23,034.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.76 : 42,557.56 = 16,691.70 : x
  2. Step 2: Convert to fraction form
    30,838.76/42,557.56 = 16,691.70/x
  3. Step 3: Cross multiply
    30,838.76x = 42,557.56 × 16,691.70
  4. Step 4: Simplify right side
    30,838.76x = 710,358,024.25
  5. Step 5: Solve for x
    x = 710,358,024.25/30,838.76
  6. Step 6: Final answer
    x = 23,034.58

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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.