Home / 20,334.91-28,061.90-11,382.41

Finding the Fourth Proportional to 20,334.91, 28,061.90 and 11,382.41

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Solution

The fourth proportional to 20,334.91, 28,061.90 and 11,382.41 is: 15,707.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.91 : 28,061.90 = 11,382.41 : x
  2. Step 2: Convert to fraction form
    20,334.91/28,061.90 = 11,382.41/x
  3. Step 3: Cross multiply
    20,334.91x = 28,061.90 × 11,382.41
  4. Step 4: Simplify right side
    20,334.91x = 319,412,051.18
  5. Step 5: Solve for x
    x = 319,412,051.18/20,334.91
  6. Step 6: Final answer
    x = 15,707.57

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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.