Home / 20,923.16-28,863.24-13,361.54

Finding the Fourth Proportional to 20,923.16, 28,863.24 and 13,361.54

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Solution

The fourth proportional to 20,923.16, 28,863.24 and 13,361.54 is: 18,432.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.16 : 28,863.24 = 13,361.54 : x
  2. Step 2: Convert to fraction form
    20,923.16/28,863.24 = 13,361.54/x
  3. Step 3: Cross multiply
    20,923.16x = 28,863.24 × 13,361.54
  4. Step 4: Simplify right side
    20,923.16x = 385,657,191.47
  5. Step 5: Solve for x
    x = 385,657,191.47/20,923.16
  6. Step 6: Final answer
    x = 18,432.08

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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.