Home / 21,586.16-29,788.84-12,154.88

Finding the Fourth Proportional to 21,586.16, 29,788.84 and 12,154.88

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Solution

The fourth proportional to 21,586.16, 29,788.84 and 12,154.88 is: 16,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,586.16 : 29,788.84 = 12,154.88 : x
  2. Step 2: Convert to fraction form
    21,586.16/29,788.84 = 12,154.88/x
  3. Step 3: Cross multiply
    21,586.16x = 29,788.84 × 12,154.88
  4. Step 4: Simplify right side
    21,586.16x = 362,079,775.54
  5. Step 5: Solve for x
    x = 362,079,775.54/21,586.16
  6. Step 6: Final answer
    x = 16,773.70

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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.