Home / 21,930.18-32,895.58-7,139.18

Finding the Fourth Proportional to 21,930.18, 32,895.58 and 7,139.18

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Solution

The fourth proportional to 21,930.18, 32,895.58 and 7,139.18 is: 10,708.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.18 : 32,895.58 = 7,139.18 : x
  2. Step 2: Convert to fraction form
    21,930.18/32,895.58 = 7,139.18/x
  3. Step 3: Cross multiply
    21,930.18x = 32,895.58 × 7,139.18
  4. Step 4: Simplify right side
    21,930.18x = 234,847,466.82
  5. Step 5: Solve for x
    x = 234,847,466.82/21,930.18
  6. Step 6: Final answer
    x = 10,708.87

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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.