Home / 39,478.70-54,483.20-22,255.32

Finding the Fourth Proportional to 39,478.70, 54,483.20 and 22,255.32

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Solution

The fourth proportional to 39,478.70, 54,483.20 and 22,255.32 is: 30,713.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,478.70 : 54,483.20 = 22,255.32 : x
  2. Step 2: Convert to fraction form
    39,478.70/54,483.20 = 22,255.32/x
  3. Step 3: Cross multiply
    39,478.70x = 54,483.20 × 22,255.32
  4. Step 4: Simplify right side
    39,478.70x = 1,212,541,227.12
  5. Step 5: Solve for x
    x = 1,212,541,227.12/39,478.70
  6. Step 6: Final answer
    x = 30,713.81

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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.