Home / 21,423.16-29,560.45-13,459.75

Finding the Fourth Proportional to 21,423.16, 29,560.45 and 13,459.75

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Solution

The fourth proportional to 21,423.16, 29,560.45 and 13,459.75 is: 18,572.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.16 : 29,560.45 = 13,459.75 : x
  2. Step 2: Convert to fraction form
    21,423.16/29,560.45 = 13,459.75/x
  3. Step 3: Cross multiply
    21,423.16x = 29,560.45 × 13,459.75
  4. Step 4: Simplify right side
    21,423.16x = 397,876,208.00
  5. Step 5: Solve for x
    x = 397,876,208.00/21,423.16
  6. Step 6: Final answer
    x = 18,572.24

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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.