Home / 15,856.32-21,883.92-9,143.04

Finding the Fourth Proportional to 15,856.32, 21,883.92 and 9,143.04

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Solution

The fourth proportional to 15,856.32, 21,883.92 and 9,143.04 is: 12,618.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,856.32 : 21,883.92 = 9,143.04 : x
  2. Step 2: Convert to fraction form
    15,856.32/21,883.92 = 9,143.04/x
  3. Step 3: Cross multiply
    15,856.32x = 21,883.92 × 9,143.04
  4. Step 4: Simplify right side
    15,856.32x = 200,085,555.92
  5. Step 5: Solve for x
    x = 200,085,555.92/15,856.32
  6. Step 6: Final answer
    x = 12,618.66

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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.