Home / 21,122.04-29,154.90-12,175.52

Finding the Fourth Proportional to 21,122.04, 29,154.90 and 12,175.52

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Solution

The fourth proportional to 21,122.04, 29,154.90 and 12,175.52 is: 16,805.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.04 : 29,154.90 = 12,175.52 : x
  2. Step 2: Convert to fraction form
    21,122.04/29,154.90 = 12,175.52/x
  3. Step 3: Cross multiply
    21,122.04x = 29,154.90 × 12,175.52
  4. Step 4: Simplify right side
    21,122.04x = 354,976,068.05
  5. Step 5: Solve for x
    x = 354,976,068.05/21,122.04
  6. Step 6: Final answer
    x = 16,805.96

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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.