Home / 21,720.56-29,973.75-12,767.52

Finding the Fourth Proportional to 21,720.56, 29,973.75 and 12,767.52

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Solution

The fourth proportional to 21,720.56, 29,973.75 and 12,767.52 is: 17,618.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.56 : 29,973.75 = 12,767.52 : x
  2. Step 2: Convert to fraction form
    21,720.56/29,973.75 = 12,767.52/x
  3. Step 3: Cross multiply
    21,720.56x = 29,973.75 × 12,767.52
  4. Step 4: Simplify right side
    21,720.56x = 382,690,517.12
  5. Step 5: Solve for x
    x = 382,690,517.12/21,720.56
  6. Step 6: Final answer
    x = 17,618.82

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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.