Home / 38,782.08-58,173.12-12,488.88

Finding the Fourth Proportional to 38,782.08, 58,173.12 and 12,488.88

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Solution

The fourth proportional to 38,782.08, 58,173.12 and 12,488.88 is: 18,733.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,782.08 : 58,173.12 = 12,488.88 : x
  2. Step 2: Convert to fraction form
    38,782.08/58,173.12 = 12,488.88/x
  3. Step 3: Cross multiply
    38,782.08x = 58,173.12 × 12,488.88
  4. Step 4: Simplify right side
    38,782.08x = 726,517,114.91
  5. Step 5: Solve for x
    x = 726,517,114.91/38,782.08
  6. Step 6: Final answer
    x = 18,733.32

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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.