Home / 27,728.96-38,268.60-15,155.60

Finding the Fourth Proportional to 27,728.96, 38,268.60 and 15,155.60

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Solution

The fourth proportional to 27,728.96, 38,268.60 and 15,155.60 is: 20,916.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.96 : 38,268.60 = 15,155.60 : x
  2. Step 2: Convert to fraction form
    27,728.96/38,268.60 = 15,155.60/x
  3. Step 3: Cross multiply
    27,728.96x = 38,268.60 × 15,155.60
  4. Step 4: Simplify right side
    27,728.96x = 579,983,594.16
  5. Step 5: Solve for x
    x = 579,983,594.16/27,728.96
  6. Step 6: Final answer
    x = 20,916.17

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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.