Home / 20,334.19-28,061.28-11,381.87

Finding the Fourth Proportional to 20,334.19, 28,061.28 and 11,381.87

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Solution

The fourth proportional to 20,334.19, 28,061.28 and 11,381.87 is: 15,707.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.19 : 28,061.28 = 11,381.87 : x
  2. Step 2: Convert to fraction form
    20,334.19/28,061.28 = 11,381.87/x
  3. Step 3: Cross multiply
    20,334.19x = 28,061.28 × 11,381.87
  4. Step 4: Simplify right side
    20,334.19x = 319,389,840.99
  5. Step 5: Solve for x
    x = 319,389,840.99/20,334.19
  6. Step 6: Final answer
    x = 15,707.04

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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.