Home / 15,534.62-21,438.03-8,820.43

Finding the Fourth Proportional to 15,534.62, 21,438.03 and 8,820.43

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Solution

The fourth proportional to 15,534.62, 21,438.03 and 8,820.43 is: 12,172.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.62 : 21,438.03 = 8,820.43 : x
  2. Step 2: Convert to fraction form
    15,534.62/21,438.03 = 8,820.43/x
  3. Step 3: Cross multiply
    15,534.62x = 21,438.03 × 8,820.43
  4. Step 4: Simplify right side
    15,534.62x = 189,092,642.95
  5. Step 5: Solve for x
    x = 189,092,642.95/15,534.62
  6. Step 6: Final answer
    x = 12,172.34

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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.