Home / 21,268.92-29,335.86-15,605.40

Finding the Fourth Proportional to 21,268.92, 29,335.86 and 15,605.40

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Solution

The fourth proportional to 21,268.92, 29,335.86 and 15,605.40 is: 21,524.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.92 : 29,335.86 = 15,605.40 : x
  2. Step 2: Convert to fraction form
    21,268.92/29,335.86 = 15,605.40/x
  3. Step 3: Cross multiply
    21,268.92x = 29,335.86 × 15,605.40
  4. Step 4: Simplify right side
    21,268.92x = 457,797,829.64
  5. Step 5: Solve for x
    x = 457,797,829.64/21,268.92
  6. Step 6: Final answer
    x = 21,524.26

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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.