Home / 15,880.38-23,822.16-5,490.78

Finding the Fourth Proportional to 15,880.38, 23,822.16 and 5,490.78

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Solution

The fourth proportional to 15,880.38, 23,822.16 and 5,490.78 is: 8,236.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880.38 : 23,822.16 = 5,490.78 : x
  2. Step 2: Convert to fraction form
    15,880.38/23,822.16 = 5,490.78/x
  3. Step 3: Cross multiply
    15,880.38x = 23,822.16 × 5,490.78
  4. Step 4: Simplify right side
    15,880.38x = 130,802,239.68
  5. Step 5: Solve for x
    x = 130,802,239.68/15,880.38
  6. Step 6: Final answer
    x = 8,236.72

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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.