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Finding the Fourth Proportional to 15,878.78, 23,818.22 and 5,356.19

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Solution

The fourth proportional to 15,878.78, 23,818.22 and 5,356.19 is: 8,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,878.78 : 23,818.22 = 5,356.19 : x
  2. Step 2: Convert to fraction form
    15,878.78/23,818.22 = 5,356.19/x
  3. Step 3: Cross multiply
    15,878.78x = 23,818.22 × 5,356.19
  4. Step 4: Simplify right side
    15,878.78x = 127,574,765.91
  5. Step 5: Solve for x
    x = 127,574,765.91/15,878.78
  6. Step 6: Final answer
    x = 8,034.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.