Home / 15,723.92-21,697.44-8,918.24

Finding the Fourth Proportional to 15,723.92, 21,697.44 and 8,918.24

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Solution

The fourth proportional to 15,723.92, 21,697.44 and 8,918.24 is: 12,306.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.92 : 21,697.44 = 8,918.24 : x
  2. Step 2: Convert to fraction form
    15,723.92/21,697.44 = 8,918.24/x
  3. Step 3: Cross multiply
    15,723.92x = 21,697.44 × 8,918.24
  4. Step 4: Simplify right side
    15,723.92x = 193,502,977.31
  5. Step 5: Solve for x
    x = 193,502,977.31/15,723.92
  6. Step 6: Final answer
    x = 12,306.28

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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.