Home / 22,620.12-31,215.65-12,548.46

Finding the Fourth Proportional to 22,620.12, 31,215.65 and 12,548.46

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Solution

The fourth proportional to 22,620.12, 31,215.65 and 12,548.46 is: 17,316.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,620.12 : 31,215.65 = 12,548.46 : x
  2. Step 2: Convert to fraction form
    22,620.12/31,215.65 = 12,548.46/x
  3. Step 3: Cross multiply
    22,620.12x = 31,215.65 × 12,548.46
  4. Step 4: Simplify right side
    22,620.12x = 391,708,272.66
  5. Step 5: Solve for x
    x = 391,708,272.66/22,620.12
  6. Step 6: Final answer
    x = 17,316.81

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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.