Home / 20,557.36-28,381.38-13,496.16

Finding the Fourth Proportional to 20,557.36, 28,381.38 and 13,496.16

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Solution

The fourth proportional to 20,557.36, 28,381.38 and 13,496.16 is: 18,632.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.36 : 28,381.38 = 13,496.16 : x
  2. Step 2: Convert to fraction form
    20,557.36/28,381.38 = 13,496.16/x
  3. Step 3: Cross multiply
    20,557.36x = 28,381.38 × 13,496.16
  4. Step 4: Simplify right side
    20,557.36x = 383,039,645.50
  5. Step 5: Solve for x
    x = 383,039,645.50/20,557.36
  6. Step 6: Final answer
    x = 18,632.73

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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.