Home / 15,720.82-21,697.81-9,010.95

Finding the Fourth Proportional to 15,720.82, 21,697.81 and 9,010.95

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Solution

The fourth proportional to 15,720.82, 21,697.81 and 9,010.95 is: 12,436.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.82 : 21,697.81 = 9,010.95 : x
  2. Step 2: Convert to fraction form
    15,720.82/21,697.81 = 9,010.95/x
  3. Step 3: Cross multiply
    15,720.82x = 21,697.81 × 9,010.95
  4. Step 4: Simplify right side
    15,720.82x = 195,517,772.53
  5. Step 5: Solve for x
    x = 195,517,772.53/15,720.82
  6. Step 6: Final answer
    x = 12,436.87

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1.5x scale

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.