Home / 21,778.88-30,053.16-12,348.96

Finding the Fourth Proportional to 21,778.88, 30,053.16 and 12,348.96

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Solution

The fourth proportional to 21,778.88, 30,053.16 and 12,348.96 is: 17,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.88 : 30,053.16 = 12,348.96 : x
  2. Step 2: Convert to fraction form
    21,778.88/30,053.16 = 12,348.96/x
  3. Step 3: Cross multiply
    21,778.88x = 30,053.16 × 12,348.96
  4. Step 4: Simplify right side
    21,778.88x = 371,125,270.71
  5. Step 5: Solve for x
    x = 371,125,270.71/21,778.88
  6. Step 6: Final answer
    x = 17,040.60

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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.