Home / 39,670.60-54,744.96-21,765.76

Finding the Fourth Proportional to 39,670.60, 54,744.96 and 21,765.76

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Solution

The fourth proportional to 39,670.60, 54,744.96 and 21,765.76 is: 30,036.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.60 : 54,744.96 = 21,765.76 : x
  2. Step 2: Convert to fraction form
    39,670.60/54,744.96 = 21,765.76/x
  3. Step 3: Cross multiply
    39,670.60x = 54,744.96 × 21,765.76
  4. Step 4: Simplify right side
    39,670.60x = 1,191,565,660.57
  5. Step 5: Solve for x
    x = 1,191,565,660.57/39,670.60
  6. Step 6: Final answer
    x = 30,036.49

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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.