Home / 21,191.23-31,785.44-8,708.02

Finding the Fourth Proportional to 21,191.23, 31,785.44 and 8,708.02

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Solution

The fourth proportional to 21,191.23, 31,785.44 and 8,708.02 is: 13,061.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.23 : 31,785.44 = 8,708.02 : x
  2. Step 2: Convert to fraction form
    21,191.23/31,785.44 = 8,708.02/x
  3. Step 3: Cross multiply
    21,191.23x = 31,785.44 × 8,708.02
  4. Step 4: Simplify right side
    21,191.23x = 276,788,203.69
  5. Step 5: Solve for x
    x = 276,788,203.69/21,191.23
  6. Step 6: Final answer
    x = 13,061.45

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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.