Home / 21,475.95-29,665.20-17,902.58

Finding the Fourth Proportional to 21,475.95, 29,665.20 and 17,902.58

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Solution

The fourth proportional to 21,475.95, 29,665.20 and 17,902.58 is: 24,729.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,475.95 : 29,665.20 = 17,902.58 : x
  2. Step 2: Convert to fraction form
    21,475.95/29,665.20 = 17,902.58/x
  3. Step 3: Cross multiply
    21,475.95x = 29,665.20 × 17,902.58
  4. Step 4: Simplify right side
    21,475.95x = 531,083,616.22
  5. Step 5: Solve for x
    x = 531,083,616.22/21,475.95
  6. Step 6: Final answer
    x = 24,729.23

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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.