Home / 39,670.16-54,743.45-21,764.70

Finding the Fourth Proportional to 39,670.16, 54,743.45 and 21,764.70

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Solution

The fourth proportional to 39,670.16, 54,743.45 and 21,764.70 is: 30,034.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.16 : 54,743.45 = 21,764.70 : x
  2. Step 2: Convert to fraction form
    39,670.16/54,743.45 = 21,764.70/x
  3. Step 3: Cross multiply
    39,670.16x = 54,743.45 × 21,764.70
  4. Step 4: Simplify right side
    39,670.16x = 1,191,474,657.39
  5. Step 5: Solve for x
    x = 1,191,474,657.39/39,670.16
  6. Step 6: Final answer
    x = 30,034.53

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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.