Home / 19,811.52-29,540.16-19,267.20

Finding the Fourth Proportional to 19,811.52, 29,540.16 and 19,267.20

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Solution

The fourth proportional to 19,811.52, 29,540.16 and 19,267.20 is: 28,728.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.52 : 29,540.16 = 19,267.20 : x
  2. Step 2: Convert to fraction form
    19,811.52/29,540.16 = 19,267.20/x
  3. Step 3: Cross multiply
    19,811.52x = 29,540.16 × 19,267.20
  4. Step 4: Simplify right side
    19,811.52x = 569,156,170.75
  5. Step 5: Solve for x
    x = 569,156,170.75/19,811.52
  6. Step 6: Final answer
    x = 28,728.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.