Home / 15,859.35-21,888.23-9,143.66

Finding the Fourth Proportional to 15,859.35, 21,888.23 and 9,143.66

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Solution

The fourth proportional to 15,859.35, 21,888.23 and 9,143.66 is: 12,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,859.35 : 21,888.23 = 9,143.66 : x
  2. Step 2: Convert to fraction form
    15,859.35/21,888.23 = 9,143.66/x
  3. Step 3: Cross multiply
    15,859.35x = 21,888.23 × 9,143.66
  4. Step 4: Simplify right side
    15,859.35x = 200,138,610.70
  5. Step 5: Solve for x
    x = 200,138,610.70/15,859.35
  6. Step 6: Final answer
    x = 12,619.60

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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.