Home / 21,182.04-29,232.56-12,231.20

Finding the Fourth Proportional to 21,182.04, 29,232.56 and 12,231.20

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Solution

The fourth proportional to 21,182.04, 29,232.56 and 12,231.20 is: 16,879.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.04 : 29,232.56 = 12,231.20 : x
  2. Step 2: Convert to fraction form
    21,182.04/29,232.56 = 12,231.20/x
  3. Step 3: Cross multiply
    21,182.04x = 29,232.56 × 12,231.20
  4. Step 4: Simplify right side
    21,182.04x = 357,549,287.87
  5. Step 5: Solve for x
    x = 357,549,287.87/21,182.04
  6. Step 6: Final answer
    x = 16,879.83

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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.