Home / 30,116.28-45,134.10-13,472.76

Finding the Fourth Proportional to 30,116.28, 45,134.10 and 13,472.76

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Solution

The fourth proportional to 30,116.28, 45,134.10 and 13,472.76 is: 20,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,116.28 : 45,134.10 = 13,472.76 : x
  2. Step 2: Convert to fraction form
    30,116.28/45,134.10 = 13,472.76/x
  3. Step 3: Cross multiply
    30,116.28x = 45,134.10 × 13,472.76
  4. Step 4: Simplify right side
    30,116.28x = 608,080,897.12
  5. Step 5: Solve for x
    x = 608,080,897.12/30,116.28
  6. Step 6: Final answer
    x = 20,191.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.