Home / 20,220.60-27,904.02-11,268.08

Finding the Fourth Proportional to 20,220.60, 27,904.02 and 11,268.08

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Solution

The fourth proportional to 20,220.60, 27,904.02 and 11,268.08 is: 15,549.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.60 : 27,904.02 = 11,268.08 : x
  2. Step 2: Convert to fraction form
    20,220.60/27,904.02 = 11,268.08/x
  3. Step 3: Cross multiply
    20,220.60x = 27,904.02 × 11,268.08
  4. Step 4: Simplify right side
    20,220.60x = 314,424,729.68
  5. Step 5: Solve for x
    x = 314,424,729.68/20,220.60
  6. Step 6: Final answer
    x = 15,549.72

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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.