Home / 21,290.64-29,365.92-14,576.55

Finding the Fourth Proportional to 21,290.64, 29,365.92 and 14,576.55

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Solution

The fourth proportional to 21,290.64, 29,365.92 and 14,576.55 is: 20,105.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.64 : 29,365.92 = 14,576.55 : x
  2. Step 2: Convert to fraction form
    21,290.64/29,365.92 = 14,576.55/x
  3. Step 3: Cross multiply
    21,290.64x = 29,365.92 × 14,576.55
  4. Step 4: Simplify right side
    21,290.64x = 428,053,801.18
  5. Step 5: Solve for x
    x = 428,053,801.18/21,290.64
  6. Step 6: Final answer
    x = 20,105.26

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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.