Home / 21,156.74-29,195.28-12,207.13

Finding the Fourth Proportional to 21,156.74, 29,195.28 and 12,207.13

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Solution

The fourth proportional to 21,156.74, 29,195.28 and 12,207.13 is: 16,845.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.74 : 29,195.28 = 12,207.13 : x
  2. Step 2: Convert to fraction form
    21,156.74/29,195.28 = 12,207.13/x
  3. Step 3: Cross multiply
    21,156.74x = 29,195.28 × 12,207.13
  4. Step 4: Simplify right side
    21,156.74x = 356,390,578.35
  5. Step 5: Solve for x
    x = 356,390,578.35/21,156.74
  6. Step 6: Final answer
    x = 16,845.25

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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.