Home / 15,412.92-21,268.62-8,700.18

Finding the Fourth Proportional to 15,412.92, 21,268.62 and 8,700.18

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Solution

The fourth proportional to 15,412.92, 21,268.62 and 8,700.18 is: 12,005.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.92 : 21,268.62 = 8,700.18 : x
  2. Step 2: Convert to fraction form
    15,412.92/21,268.62 = 8,700.18/x
  3. Step 3: Cross multiply
    15,412.92x = 21,268.62 × 8,700.18
  4. Step 4: Simplify right side
    15,412.92x = 185,040,822.35
  5. Step 5: Solve for x
    x = 185,040,822.35/15,412.92
  6. Step 6: Final answer
    x = 12,005.57

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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.