Home / 15,445.05-21,314.19-8,371.47

Finding the Fourth Proportional to 15,445.05, 21,314.19 and 8,371.47

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Solution

The fourth proportional to 15,445.05, 21,314.19 and 8,371.47 is: 11,552.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.05 : 21,314.19 = 8,371.47 : x
  2. Step 2: Convert to fraction form
    15,445.05/21,314.19 = 8,371.47/x
  3. Step 3: Cross multiply
    15,445.05x = 21,314.19 × 8,371.47
  4. Step 4: Simplify right side
    15,445.05x = 178,431,102.16
  5. Step 5: Solve for x
    x = 178,431,102.16/15,445.05
  6. Step 6: Final answer
    x = 11,552.64

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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.