Home / 20,370.92-28,114.02-11,987.24

Finding the Fourth Proportional to 20,370.92, 28,114.02 and 11,987.24

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Solution

The fourth proportional to 20,370.92, 28,114.02 and 11,987.24 is: 16,543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.92 : 28,114.02 = 11,987.24 : x
  2. Step 2: Convert to fraction form
    20,370.92/28,114.02 = 11,987.24/x
  3. Step 3: Cross multiply
    20,370.92x = 28,114.02 × 11,987.24
  4. Step 4: Simplify right side
    20,370.92x = 337,009,505.10
  5. Step 5: Solve for x
    x = 337,009,505.10/20,370.92
  6. Step 6: Final answer
    x = 16,543.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.