Home / 20,220.32-27,904.40-11,268

Finding the Fourth Proportional to 20,220.32, 27,904.40 and 11,268

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Solution

The fourth proportional to 20,220.32, 27,904.40 and 11,268 is: 15,550.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.32 : 27,904.40 = 11,268 : x
  2. Step 2: Convert to fraction form
    20,220.32/27,904.40 = 11,268/x
  3. Step 3: Cross multiply
    20,220.32x = 27,904.40 × 11,268
  4. Step 4: Simplify right side
    20,220.32x = 314,426,779.20
  5. Step 5: Solve for x
    x = 314,426,779.20/20,220.32
  6. Step 6: Final answer
    x = 15,550.04

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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.