Home / 38,770.47-53,499.21-21,776.55

Finding the Fourth Proportional to 38,770.47, 53,499.21 and 21,776.55

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Solution

The fourth proportional to 38,770.47, 53,499.21 and 21,776.55 is: 30,049.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,770.47 : 53,499.21 = 21,776.55 : x
  2. Step 2: Convert to fraction form
    38,770.47/53,499.21 = 21,776.55/x
  3. Step 3: Cross multiply
    38,770.47x = 53,499.21 × 21,776.55
  4. Step 4: Simplify right side
    38,770.47x = 1,165,028,221.53
  5. Step 5: Solve for x
    x = 1,165,028,221.53/38,770.47
  6. Step 6: Final answer
    x = 30,049.37

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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.