Home / 28,854.05-39,793.49-20,341.15

Finding the Fourth Proportional to 28,854.05, 39,793.49 and 20,341.15

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Solution

The fourth proportional to 28,854.05, 39,793.49 and 20,341.15 is: 28,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,854.05 : 39,793.49 = 20,341.15 : x
  2. Step 2: Convert to fraction form
    28,854.05/39,793.49 = 20,341.15/x
  3. Step 3: Cross multiply
    28,854.05x = 39,793.49 × 20,341.15
  4. Step 4: Simplify right side
    28,854.05x = 809,445,364.73
  5. Step 5: Solve for x
    x = 809,445,364.73/28,854.05
  6. Step 6: Final answer
    x = 28,053.10

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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.