Home / 20,822.81-28,717.31-14,761.06

Finding the Fourth Proportional to 20,822.81, 28,717.31 and 14,761.06

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Solution

The fourth proportional to 20,822.81, 28,717.31 and 14,761.06 is: 20,357.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.81 : 28,717.31 = 14,761.06 : x
  2. Step 2: Convert to fraction form
    20,822.81/28,717.31 = 14,761.06/x
  3. Step 3: Cross multiply
    20,822.81x = 28,717.31 × 14,761.06
  4. Step 4: Simplify right side
    20,822.81x = 423,897,790.35
  5. Step 5: Solve for x
    x = 423,897,790.35/20,822.81
  6. Step 6: Final answer
    x = 20,357.38

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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.