Home / 23,031.16-31,781.82-12,959.80

Finding the Fourth Proportional to 23,031.16, 31,781.82 and 12,959.80

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Solution

The fourth proportional to 23,031.16, 31,781.82 and 12,959.80 is: 17,883.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,031.16 : 31,781.82 = 12,959.80 : x
  2. Step 2: Convert to fraction form
    23,031.16/31,781.82 = 12,959.80/x
  3. Step 3: Cross multiply
    23,031.16x = 31,781.82 × 12,959.80
  4. Step 4: Simplify right side
    23,031.16x = 411,886,030.84
  5. Step 5: Solve for x
    x = 411,886,030.84/23,031.16
  6. Step 6: Final answer
    x = 17,883.86

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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.