Home / 15,334.38-21,161.43-8,620.29

Finding the Fourth Proportional to 15,334.38, 21,161.43 and 8,620.29

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Solution

The fourth proportional to 15,334.38, 21,161.43 and 8,620.29 is: 11,895.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,334.38 : 21,161.43 = 8,620.29 : x
  2. Step 2: Convert to fraction form
    15,334.38/21,161.43 = 8,620.29/x
  3. Step 3: Cross multiply
    15,334.38x = 21,161.43 × 8,620.29
  4. Step 4: Simplify right side
    15,334.38x = 182,417,663.41
  5. Step 5: Solve for x
    x = 182,417,663.41/15,334.38
  6. Step 6: Final answer
    x = 11,895.99

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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.