Home / 15,278.53-21,084.31-8,564.16

Finding the Fourth Proportional to 15,278.53, 21,084.31 and 8,564.16

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Solution

The fourth proportional to 15,278.53, 21,084.31 and 8,564.16 is: 11,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.53 : 21,084.31 = 8,564.16 : x
  2. Step 2: Convert to fraction form
    15,278.53/21,084.31 = 8,564.16/x
  3. Step 3: Cross multiply
    15,278.53x = 21,084.31 × 8,564.16
  4. Step 4: Simplify right side
    15,278.53x = 180,569,404.33
  5. Step 5: Solve for x
    x = 180,569,404.33/15,278.53
  6. Step 6: Final answer
    x = 11,818.51

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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.