Home / 23,181.60-31,990.32-12,571.20

Finding the Fourth Proportional to 23,181.60, 31,990.32 and 12,571.20

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Solution

The fourth proportional to 23,181.60, 31,990.32 and 12,571.20 is: 17,348.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,181.60 : 31,990.32 = 12,571.20 : x
  2. Step 2: Convert to fraction form
    23,181.60/31,990.32 = 12,571.20/x
  3. Step 3: Cross multiply
    23,181.60x = 31,990.32 × 12,571.20
  4. Step 4: Simplify right side
    23,181.60x = 402,156,710.78
  5. Step 5: Solve for x
    x = 402,156,710.78/23,181.60
  6. Step 6: Final answer
    x = 17,348.10

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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.