Home / 21,657.30-29,820.45-18,463.47

Finding the Fourth Proportional to 21,657.30, 29,820.45 and 18,463.47

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Solution

The fourth proportional to 21,657.30, 29,820.45 and 18,463.47 is: 25,422.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.30 : 29,820.45 = 18,463.47 : x
  2. Step 2: Convert to fraction form
    21,657.30/29,820.45 = 18,463.47/x
  3. Step 3: Cross multiply
    21,657.30x = 29,820.45 × 18,463.47
  4. Step 4: Simplify right side
    21,657.30x = 550,588,983.96
  5. Step 5: Solve for x
    x = 550,588,983.96/21,657.30
  6. Step 6: Final answer
    x = 25,422.79

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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.