Home / 23,181.25-31,990.32-12,570.88

Finding the Fourth Proportional to 23,181.25, 31,990.32 and 12,570.88

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Solution

The fourth proportional to 23,181.25, 31,990.32 and 12,570.88 is: 17,347.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,181.25 : 31,990.32 = 12,570.88 : x
  2. Step 2: Convert to fraction form
    23,181.25/31,990.32 = 12,570.88/x
  3. Step 3: Cross multiply
    23,181.25x = 31,990.32 × 12,570.88
  4. Step 4: Simplify right side
    23,181.25x = 402,146,473.88
  5. Step 5: Solve for x
    x = 402,146,473.88/23,181.25
  6. Step 6: Final answer
    x = 17,347.92

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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.