Home / 21,602.08-29,793.24-18,139.30

Finding the Fourth Proportional to 21,602.08, 29,793.24 and 18,139.30

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Solution

The fourth proportional to 21,602.08, 29,793.24 and 18,139.30 is: 25,017.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.08 : 29,793.24 = 18,139.30 : x
  2. Step 2: Convert to fraction form
    21,602.08/29,793.24 = 18,139.30/x
  3. Step 3: Cross multiply
    21,602.08x = 29,793.24 × 18,139.30
  4. Step 4: Simplify right side
    21,602.08x = 540,428,518.33
  5. Step 5: Solve for x
    x = 540,428,518.33/21,602.08
  6. Step 6: Final answer
    x = 25,017.43

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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.