Home / 21,613.23-29,816.84-13,541.92

Finding the Fourth Proportional to 21,613.23, 29,816.84 and 13,541.92

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Solution

The fourth proportional to 21,613.23, 29,816.84 and 13,541.92 is: 18,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.23 : 29,816.84 = 13,541.92 : x
  2. Step 2: Convert to fraction form
    21,613.23/29,816.84 = 13,541.92/x
  3. Step 3: Cross multiply
    21,613.23x = 29,816.84 × 13,541.92
  4. Step 4: Simplify right side
    21,613.23x = 403,777,221.25
  5. Step 5: Solve for x
    x = 403,777,221.25/21,613.23
  6. Step 6: Final answer
    x = 18,681.95

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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.