Home / 15,471.46-21,350.21-8,756.90

Finding the Fourth Proportional to 15,471.46, 21,350.21 and 8,756.90

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Solution

The fourth proportional to 15,471.46, 21,350.21 and 8,756.90 is: 12,084.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.46 : 21,350.21 = 8,756.90 : x
  2. Step 2: Convert to fraction form
    15,471.46/21,350.21 = 8,756.90/x
  3. Step 3: Cross multiply
    15,471.46x = 21,350.21 × 8,756.90
  4. Step 4: Simplify right side
    15,471.46x = 186,961,653.95
  5. Step 5: Solve for x
    x = 186,961,653.95/15,471.46
  6. Step 6: Final answer
    x = 12,084.29

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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.