Home / 19,519.20-29,278.88-4,728.10

Finding the Fourth Proportional to 19,519.20, 29,278.88 and 4,728.10

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Solution

The fourth proportional to 19,519.20, 29,278.88 and 4,728.10 is: 7,092.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,519.20 : 29,278.88 = 4,728.10 : x
  2. Step 2: Convert to fraction form
    19,519.20/29,278.88 = 4,728.10/x
  3. Step 3: Cross multiply
    19,519.20x = 29,278.88 × 4,728.10
  4. Step 4: Simplify right side
    19,519.20x = 138,433,472.53
  5. Step 5: Solve for x
    x = 138,433,472.53/19,519.20
  6. Step 6: Final answer
    x = 7,092.17

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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.