Home / 20,040.80-27,656.16-11,088.32

Finding the Fourth Proportional to 20,040.80, 27,656.16 and 11,088.32

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Solution

The fourth proportional to 20,040.80, 27,656.16 and 11,088.32 is: 15,301.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,040.80 : 27,656.16 = 11,088.32 : x
  2. Step 2: Convert to fraction form
    20,040.80/27,656.16 = 11,088.32/x
  3. Step 3: Cross multiply
    20,040.80x = 27,656.16 × 11,088.32
  4. Step 4: Simplify right side
    20,040.80x = 306,660,352.05
  5. Step 5: Solve for x
    x = 306,660,352.05/20,040.80
  6. Step 6: Final answer
    x = 15,301.80

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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.