Home / 21,059.78-31,561.67-9,195.62

Finding the Fourth Proportional to 21,059.78, 31,561.67 and 9,195.62

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Solution

The fourth proportional to 21,059.78, 31,561.67 and 9,195.62 is: 13,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.78 : 31,561.67 = 9,195.62 : x
  2. Step 2: Convert to fraction form
    21,059.78/31,561.67 = 9,195.62/x
  3. Step 3: Cross multiply
    21,059.78x = 31,561.67 × 9,195.62
  4. Step 4: Simplify right side
    21,059.78x = 290,228,920.10
  5. Step 5: Solve for x
    x = 290,228,920.10/21,059.78
  6. Step 6: Final answer
    x = 13,781.20

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1.5x scale

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.