Home / 22,712.06-31,335.35-13,756.70

Finding the Fourth Proportional to 22,712.06, 31,335.35 and 13,756.70

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Solution

The fourth proportional to 22,712.06, 31,335.35 and 13,756.70 is: 18,979.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,712.06 : 31,335.35 = 13,756.70 : x
  2. Step 2: Convert to fraction form
    22,712.06/31,335.35 = 13,756.70/x
  3. Step 3: Cross multiply
    22,712.06x = 31,335.35 × 13,756.70
  4. Step 4: Simplify right side
    22,712.06x = 431,071,009.35
  5. Step 5: Solve for x
    x = 431,071,009.35/22,712.06
  6. Step 6: Final answer
    x = 18,979.83

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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.