Home / 20,334.47-28,061.58-11,381.98

Finding the Fourth Proportional to 20,334.47, 28,061.58 and 11,381.98

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Solution

The fourth proportional to 20,334.47, 28,061.58 and 11,381.98 is: 15,707.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.47 : 28,061.58 = 11,381.98 : x
  2. Step 2: Convert to fraction form
    20,334.47/28,061.58 = 11,381.98/x
  3. Step 3: Cross multiply
    20,334.47x = 28,061.58 × 11,381.98
  4. Step 4: Simplify right side
    20,334.47x = 319,396,272.17
  5. Step 5: Solve for x
    x = 319,396,272.17/20,334.47
  6. Step 6: Final answer
    x = 15,707.14

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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.