Home / 10,921.67-15,071.90-6,205.95

Finding the Fourth Proportional to 10,921.67, 15,071.90 and 6,205.95

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Solution

The fourth proportional to 10,921.67, 15,071.90 and 6,205.95 is: 8,564.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.67 : 15,071.90 = 6,205.95 : x
  2. Step 2: Convert to fraction form
    10,921.67/15,071.90 = 6,205.95/x
  3. Step 3: Cross multiply
    10,921.67x = 15,071.90 × 6,205.95
  4. Step 4: Simplify right side
    10,921.67x = 93,535,426.78
  5. Step 5: Solve for x
    x = 93,535,426.78/10,921.67
  6. Step 6: Final answer
    x = 8,564.21

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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.