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Finding the Fourth Proportional to 30,479.19, 45,709.49 and 10,753.14

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Solution

The fourth proportional to 30,479.19, 45,709.49 and 10,753.14 is: 16,126.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,479.19 : 45,709.49 = 10,753.14 : x
  2. Step 2: Convert to fraction form
    30,479.19/45,709.49 = 10,753.14/x
  3. Step 3: Cross multiply
    30,479.19x = 45,709.49 × 10,753.14
  4. Step 4: Simplify right side
    30,479.19x = 491,520,491.53
  5. Step 5: Solve for x
    x = 491,520,491.53/30,479.19
  6. Step 6: Final answer
    x = 16,126.43

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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.