Home / 39,719.40-54,809.34-22,720.20

Finding the Fourth Proportional to 39,719.40, 54,809.34 and 22,720.20

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Solution

The fourth proportional to 39,719.40, 54,809.34 and 22,720.20 is: 31,351.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.40 : 54,809.34 = 22,720.20 : x
  2. Step 2: Convert to fraction form
    39,719.40/54,809.34 = 22,720.20/x
  3. Step 3: Cross multiply
    39,719.40x = 54,809.34 × 22,720.20
  4. Step 4: Simplify right side
    39,719.40x = 1,245,279,166.67
  5. Step 5: Solve for x
    x = 1,245,279,166.67/39,719.40
  6. Step 6: Final answer
    x = 31,351.91

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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.