Home / 15,342.21-21,172.28-8,627.90

Finding the Fourth Proportional to 15,342.21, 21,172.28 and 8,627.90

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Solution

The fourth proportional to 15,342.21, 21,172.28 and 8,627.90 is: 11,906.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.21 : 21,172.28 = 8,627.90 : x
  2. Step 2: Convert to fraction form
    15,342.21/21,172.28 = 8,627.90/x
  3. Step 3: Cross multiply
    15,342.21x = 21,172.28 × 8,627.90
  4. Step 4: Simplify right side
    15,342.21x = 182,672,314.61
  5. Step 5: Solve for x
    x = 182,672,314.61/15,342.21
  6. Step 6: Final answer
    x = 11,906.52

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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.