Home / 15,838.76-21,857.20-8,765.18

Finding the Fourth Proportional to 15,838.76, 21,857.20 and 8,765.18

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Solution

The fourth proportional to 15,838.76, 21,857.20 and 8,765.18 is: 12,095.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,838.76 : 21,857.20 = 8,765.18 : x
  2. Step 2: Convert to fraction form
    15,838.76/21,857.20 = 8,765.18/x
  3. Step 3: Cross multiply
    15,838.76x = 21,857.20 × 8,765.18
  4. Step 4: Simplify right side
    15,838.76x = 191,582,292.30
  5. Step 5: Solve for x
    x = 191,582,292.30/15,838.76
  6. Step 6: Final answer
    x = 12,095.79

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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.