Home / 55,398.70-83,109.02-20,338.66

Finding the Fourth Proportional to 55,398.70, 83,109.02 and 20,338.66

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Solution

The fourth proportional to 55,398.70, 83,109.02 and 20,338.66 is: 30,512.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,398.70 : 83,109.02 = 20,338.66 : x
  2. Step 2: Convert to fraction form
    55,398.70/83,109.02 = 20,338.66/x
  3. Step 3: Cross multiply
    55,398.70x = 83,109.02 × 20,338.66
  4. Step 4: Simplify right side
    55,398.70x = 1,690,326,100.71
  5. Step 5: Solve for x
    x = 1,690,326,100.71/55,398.70
  6. Step 6: Final answer
    x = 30,512.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.