Home / 21,331.60-29,437.04-11,899.92

Finding the Fourth Proportional to 21,331.60, 29,437.04 and 11,899.92

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Solution

The fourth proportional to 21,331.60, 29,437.04 and 11,899.92 is: 16,421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.60 : 29,437.04 = 11,899.92 : x
  2. Step 2: Convert to fraction form
    21,331.60/29,437.04 = 11,899.92/x
  3. Step 3: Cross multiply
    21,331.60x = 29,437.04 × 11,899.92
  4. Step 4: Simplify right side
    21,331.60x = 350,298,421.04
  5. Step 5: Solve for x
    x = 350,298,421.04/21,331.60
  6. Step 6: Final answer
    x = 16,421.57

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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.