Home / 21,833.55-30,129.42-13,349.96

Finding the Fourth Proportional to 21,833.55, 30,129.42 and 13,349.96

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Solution

The fourth proportional to 21,833.55, 30,129.42 and 13,349.96 is: 18,422.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,833.55 : 30,129.42 = 13,349.96 : x
  2. Step 2: Convert to fraction form
    21,833.55/30,129.42 = 13,349.96/x
  3. Step 3: Cross multiply
    21,833.55x = 30,129.42 × 13,349.96
  4. Step 4: Simplify right side
    21,833.55x = 402,226,658.61
  5. Step 5: Solve for x
    x = 402,226,658.61/21,833.55
  6. Step 6: Final answer
    x = 18,422.41

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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.