Home / 28,365.05-39,155.93-20,193.95

Finding the Fourth Proportional to 28,365.05, 39,155.93 and 20,193.95

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Solution

The fourth proportional to 28,365.05, 39,155.93 and 20,193.95 is: 27,876.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.05 : 39,155.93 = 20,193.95 : x
  2. Step 2: Convert to fraction form
    28,365.05/39,155.93 = 20,193.95/x
  3. Step 3: Cross multiply
    28,365.05x = 39,155.93 × 20,193.95
  4. Step 4: Simplify right side
    28,365.05x = 790,712,892.62
  5. Step 5: Solve for x
    x = 790,712,892.62/28,365.05
  6. Step 6: Final answer
    x = 27,876.31

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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.