Home / 21,566.55-29,760.51-12,613.53

Finding the Fourth Proportional to 21,566.55, 29,760.51 and 12,613.53

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Solution

The fourth proportional to 21,566.55, 29,760.51 and 12,613.53 is: 17,405.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,566.55 : 29,760.51 = 12,613.53 : x
  2. Step 2: Convert to fraction form
    21,566.55/29,760.51 = 12,613.53/x
  3. Step 3: Cross multiply
    21,566.55x = 29,760.51 × 12,613.53
  4. Step 4: Simplify right side
    21,566.55x = 375,385,085.70
  5. Step 5: Solve for x
    x = 375,385,085.70/21,566.55
  6. Step 6: Final answer
    x = 17,405.89

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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.