Home / 15,867.65-21,896.60-9,155.43

Finding the Fourth Proportional to 15,867.65, 21,896.60 and 9,155.43

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Solution

The fourth proportional to 15,867.65, 21,896.60 and 9,155.43 is: 12,634.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,867.65 : 21,896.60 = 9,155.43 : x
  2. Step 2: Convert to fraction form
    15,867.65/21,896.60 = 9,155.43/x
  3. Step 3: Cross multiply
    15,867.65x = 21,896.60 × 9,155.43
  4. Step 4: Simplify right side
    15,867.65x = 200,472,742.76
  5. Step 5: Solve for x
    x = 200,472,742.76/15,867.65
  6. Step 6: Final answer
    x = 12,634.06

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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.