Home / 21,155.08-31,674.22-15,945.16

Finding the Fourth Proportional to 21,155.08, 31,674.22 and 15,945.16

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Solution

The fourth proportional to 21,155.08, 31,674.22 and 15,945.16 is: 23,873.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.08 : 31,674.22 = 15,945.16 : x
  2. Step 2: Convert to fraction form
    21,155.08/31,674.22 = 15,945.16/x
  3. Step 3: Cross multiply
    21,155.08x = 31,674.22 × 15,945.16
  4. Step 4: Simplify right side
    21,155.08x = 505,050,505.78
  5. Step 5: Solve for x
    x = 505,050,505.78/21,155.08
  6. Step 6: Final answer
    x = 23,873.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.