Home / 15,342.17-21,172.32-8,627.74

Finding the Fourth Proportional to 15,342.17, 21,172.32 and 8,627.74

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Solution

The fourth proportional to 15,342.17, 21,172.32 and 8,627.74 is: 11,906.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.17 : 21,172.32 = 8,627.74 : x
  2. Step 2: Convert to fraction form
    15,342.17/21,172.32 = 8,627.74/x
  3. Step 3: Cross multiply
    15,342.17x = 21,172.32 × 8,627.74
  4. Step 4: Simplify right side
    15,342.17x = 182,669,315.17
  5. Step 5: Solve for x
    x = 182,669,315.17/15,342.17
  6. Step 6: Final answer
    x = 11,906.35

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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.