Home / 30,472.20-45,785.10-19,384.20

Finding the Fourth Proportional to 30,472.20, 45,785.10 and 19,384.20

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Solution

The fourth proportional to 30,472.20, 45,785.10 and 19,384.20 is: 29,125.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,472.20 : 45,785.10 = 19,384.20 : x
  2. Step 2: Convert to fraction form
    30,472.20/45,785.10 = 19,384.20/x
  3. Step 3: Cross multiply
    30,472.20x = 45,785.10 × 19,384.20
  4. Step 4: Simplify right side
    30,472.20x = 887,507,535.42
  5. Step 5: Solve for x
    x = 887,507,535.42/30,472.20
  6. Step 6: Final answer
    x = 29,125.15

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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.