Home / 32,877.87-45,358.95-20,120.79

Finding the Fourth Proportional to 32,877.87, 45,358.95 and 20,120.79

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Solution

The fourth proportional to 32,877.87, 45,358.95 and 20,120.79 is: 27,759.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,877.87 : 45,358.95 = 20,120.79 : x
  2. Step 2: Convert to fraction form
    32,877.87/45,358.95 = 20,120.79/x
  3. Step 3: Cross multiply
    32,877.87x = 45,358.95 × 20,120.79
  4. Step 4: Simplify right side
    32,877.87x = 912,657,907.57
  5. Step 5: Solve for x
    x = 912,657,907.57/32,877.87
  6. Step 6: Final answer
    x = 27,759.03

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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.