Home / 15,471.41-21,350.89-8,757.05

Finding the Fourth Proportional to 15,471.41, 21,350.89 and 8,757.05

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Solution

The fourth proportional to 15,471.41, 21,350.89 and 8,757.05 is: 12,084.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.41 : 21,350.89 = 8,757.05 : x
  2. Step 2: Convert to fraction form
    15,471.41/21,350.89 = 8,757.05/x
  3. Step 3: Cross multiply
    15,471.41x = 21,350.89 × 8,757.05
  4. Step 4: Simplify right side
    15,471.41x = 186,970,682.63
  5. Step 5: Solve for x
    x = 186,970,682.63/15,471.41
  6. Step 6: Final answer
    x = 12,084.91

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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.