Home / 15,738.60-21,719.16-8,665.04

Finding the Fourth Proportional to 15,738.60, 21,719.16 and 8,665.04

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Solution

The fourth proportional to 15,738.60, 21,719.16 and 8,665.04 is: 11,957.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,738.60 : 21,719.16 = 8,665.04 : x
  2. Step 2: Convert to fraction form
    15,738.60/21,719.16 = 8,665.04/x
  3. Step 3: Cross multiply
    15,738.60x = 21,719.16 × 8,665.04
  4. Step 4: Simplify right side
    15,738.60x = 188,197,390.17
  5. Step 5: Solve for x
    x = 188,197,390.17/15,738.60
  6. Step 6: Final answer
    x = 11,957.70

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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.