Home / 15,177.72-20,945.40-8,890.32

Finding the Fourth Proportional to 15,177.72, 20,945.40 and 8,890.32

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Solution

The fourth proportional to 15,177.72, 20,945.40 and 8,890.32 is: 12,268.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,177.72 : 20,945.40 = 8,890.32 : x
  2. Step 2: Convert to fraction form
    15,177.72/20,945.40 = 8,890.32/x
  3. Step 3: Cross multiply
    15,177.72x = 20,945.40 × 8,890.32
  4. Step 4: Simplify right side
    15,177.72x = 186,211,308.53
  5. Step 5: Solve for x
    x = 186,211,308.53/15,177.72
  6. Step 6: Final answer
    x = 12,268.73

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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.