Home / 39,670.14-54,742.96-21,764.76

Finding the Fourth Proportional to 39,670.14, 54,742.96 and 21,764.76

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Solution

The fourth proportional to 39,670.14, 54,742.96 and 21,764.76 is: 30,034.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.14 : 54,742.96 = 21,764.76 : x
  2. Step 2: Convert to fraction form
    39,670.14/54,742.96 = 21,764.76/x
  3. Step 3: Cross multiply
    39,670.14x = 54,742.96 × 21,764.76
  4. Step 4: Simplify right side
    39,670.14x = 1,191,467,386.09
  5. Step 5: Solve for x
    x = 1,191,467,386.09/39,670.14
  6. Step 6: Final answer
    x = 30,034.36

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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.