Home / 21,377.32-29,500.54-11,817.90

Finding the Fourth Proportional to 21,377.32, 29,500.54 and 11,817.90

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Solution

The fourth proportional to 21,377.32, 29,500.54 and 11,817.90 is: 16,308.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.32 : 29,500.54 = 11,817.90 : x
  2. Step 2: Convert to fraction form
    21,377.32/29,500.54 = 11,817.90/x
  3. Step 3: Cross multiply
    21,377.32x = 29,500.54 × 11,817.90
  4. Step 4: Simplify right side
    21,377.32x = 348,634,402.12
  5. Step 5: Solve for x
    x = 348,634,402.12/21,377.32
  6. Step 6: Final answer
    x = 16,308.61

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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.