Home / 31,442.32-47,170.40-10,388.80

Finding the Fourth Proportional to 31,442.32, 47,170.40 and 10,388.80

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Solution

The fourth proportional to 31,442.32, 47,170.40 and 10,388.80 is: 15,585.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,442.32 : 47,170.40 = 10,388.80 : x
  2. Step 2: Convert to fraction form
    31,442.32/47,170.40 = 10,388.80/x
  3. Step 3: Cross multiply
    31,442.32x = 47,170.40 × 10,388.80
  4. Step 4: Simplify right side
    31,442.32x = 490,043,851.52
  5. Step 5: Solve for x
    x = 490,043,851.52/31,442.32
  6. Step 6: Final answer
    x = 15,585.49

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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.