Home / 21,331.08-29,434.52-12,377.04

Finding the Fourth Proportional to 21,331.08, 29,434.52 and 12,377.04

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Solution

The fourth proportional to 21,331.08, 29,434.52 and 12,377.04 is: 17,078.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.08 : 29,434.52 = 12,377.04 : x
  2. Step 2: Convert to fraction form
    21,331.08/29,434.52 = 12,377.04/x
  3. Step 3: Cross multiply
    21,331.08x = 29,434.52 × 12,377.04
  4. Step 4: Simplify right side
    21,331.08x = 364,312,231.42
  5. Step 5: Solve for x
    x = 364,312,231.42/21,331.08
  6. Step 6: Final answer
    x = 17,078.94

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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.