Home / 19,862.10-29,793.15-18,987.30

Finding the Fourth Proportional to 19,862.10, 29,793.15 and 18,987.30

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Solution

The fourth proportional to 19,862.10, 29,793.15 and 18,987.30 is: 28,480.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,862.10 : 29,793.15 = 18,987.30 : x
  2. Step 2: Convert to fraction form
    19,862.10/29,793.15 = 18,987.30/x
  3. Step 3: Cross multiply
    19,862.10x = 29,793.15 × 18,987.30
  4. Step 4: Simplify right side
    19,862.10x = 565,691,477.00
  5. Step 5: Solve for x
    x = 565,691,477.00/19,862.10
  6. Step 6: Final answer
    x = 28,480.95

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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.