Home / 30,838.50-42,557.13-16,691.45

Finding the Fourth Proportional to 30,838.50, 42,557.13 and 16,691.45

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Solution

The fourth proportional to 30,838.50, 42,557.13 and 16,691.45 is: 23,034.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.50 : 42,557.13 = 16,691.45 : x
  2. Step 2: Convert to fraction form
    30,838.50/42,557.13 = 16,691.45/x
  3. Step 3: Cross multiply
    30,838.50x = 42,557.13 × 16,691.45
  4. Step 4: Simplify right side
    30,838.50x = 710,339,994.75
  5. Step 5: Solve for x
    x = 710,339,994.75/30,838.50
  6. Step 6: Final answer
    x = 23,034.19

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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.