Home / 15,471.65-21,350.86-8,757.16

Finding the Fourth Proportional to 15,471.65, 21,350.86 and 8,757.16

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Solution

The fourth proportional to 15,471.65, 21,350.86 and 8,757.16 is: 12,084.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.65 : 21,350.86 = 8,757.16 : x
  2. Step 2: Convert to fraction form
    15,471.65/21,350.86 = 8,757.16/x
  3. Step 3: Cross multiply
    15,471.65x = 21,350.86 × 8,757.16
  4. Step 4: Simplify right side
    15,471.65x = 186,972,897.16
  5. Step 5: Solve for x
    x = 186,972,897.16/15,471.65
  6. Step 6: Final answer
    x = 12,084.87

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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.