Home / 21,086.65-29,101.70-12,134.53

Finding the Fourth Proportional to 21,086.65, 29,101.70 and 12,134.53

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Solution

The fourth proportional to 21,086.65, 29,101.70 and 12,134.53 is: 16,746.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.65 : 29,101.70 = 12,134.53 : x
  2. Step 2: Convert to fraction form
    21,086.65/29,101.70 = 12,134.53/x
  3. Step 3: Cross multiply
    21,086.65x = 29,101.70 × 12,134.53
  4. Step 4: Simplify right side
    21,086.65x = 353,135,245.52
  5. Step 5: Solve for x
    x = 353,135,245.52/21,086.65
  6. Step 6: Final answer
    x = 16,746.87

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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.