Home / 30,950.20-42,711.15-16,803.04

Finding the Fourth Proportional to 30,950.20, 42,711.15 and 16,803.04

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Solution

The fourth proportional to 30,950.20, 42,711.15 and 16,803.04 is: 23,188.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,950.20 : 42,711.15 = 16,803.04 : x
  2. Step 2: Convert to fraction form
    30,950.20/42,711.15 = 16,803.04/x
  3. Step 3: Cross multiply
    30,950.20x = 42,711.15 × 16,803.04
  4. Step 4: Simplify right side
    30,950.20x = 717,676,948.34
  5. Step 5: Solve for x
    x = 717,676,948.34/30,950.20
  6. Step 6: Final answer
    x = 23,188.12

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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.