Home / 21,082.16-31,619.65-7,040.59

Finding the Fourth Proportional to 21,082.16, 31,619.65 and 7,040.59

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Solution

The fourth proportional to 21,082.16, 31,619.65 and 7,040.59 is: 10,559.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.16 : 31,619.65 = 7,040.59 : x
  2. Step 2: Convert to fraction form
    21,082.16/31,619.65 = 7,040.59/x
  3. Step 3: Cross multiply
    21,082.16x = 31,619.65 × 7,040.59
  4. Step 4: Simplify right side
    21,082.16x = 222,620,956.39
  5. Step 5: Solve for x
    x = 222,620,956.39/21,082.16
  6. Step 6: Final answer
    x = 10,559.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.