Home / 21,613.61-29,826.69-12,182.06

Finding the Fourth Proportional to 21,613.61, 29,826.69 and 12,182.06

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Solution

The fourth proportional to 21,613.61, 29,826.69 and 12,182.06 is: 16,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.61 : 29,826.69 = 12,182.06 : x
  2. Step 2: Convert to fraction form
    21,613.61/29,826.69 = 12,182.06/x
  3. Step 3: Cross multiply
    21,613.61x = 29,826.69 × 12,182.06
  4. Step 4: Simplify right side
    21,613.61x = 363,350,527.18
  5. Step 5: Solve for x
    x = 363,350,527.18/21,613.61
  6. Step 6: Final answer
    x = 16,811.19

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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.