Home / 31,006.06-42,801.45-20,948.14

Finding the Fourth Proportional to 31,006.06, 42,801.45 and 20,948.14

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Solution

The fourth proportional to 31,006.06, 42,801.45 and 20,948.14 is: 28,917.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,006.06 : 42,801.45 = 20,948.14 : x
  2. Step 2: Convert to fraction form
    31,006.06/42,801.45 = 20,948.14/x
  3. Step 3: Cross multiply
    31,006.06x = 42,801.45 × 20,948.14
  4. Step 4: Simplify right side
    31,006.06x = 896,610,766.80
  5. Step 5: Solve for x
    x = 896,610,766.80/31,006.06
  6. Step 6: Final answer
    x = 28,917.28

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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.