Home / 21,132.34-29,167.90-12,185.24

Finding the Fourth Proportional to 21,132.34, 29,167.90 and 12,185.24

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Solution

The fourth proportional to 21,132.34, 29,167.90 and 12,185.24 is: 16,818.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.34 : 29,167.90 = 12,185.24 : x
  2. Step 2: Convert to fraction form
    21,132.34/29,167.90 = 12,185.24/x
  3. Step 3: Cross multiply
    21,132.34x = 29,167.90 × 12,185.24
  4. Step 4: Simplify right side
    21,132.34x = 355,417,685.49
  5. Step 5: Solve for x
    x = 355,417,685.49/21,132.34
  6. Step 6: Final answer
    x = 16,818.66

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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.