Home / 10,279.60-15,411.30-4,431.40

Finding the Fourth Proportional to 10,279.60, 15,411.30 and 4,431.40

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Solution

The fourth proportional to 10,279.60, 15,411.30 and 4,431.40 is: 6,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.60 : 15,411.30 = 4,431.40 : x
  2. Step 2: Convert to fraction form
    10,279.60/15,411.30 = 4,431.40/x
  3. Step 3: Cross multiply
    10,279.60x = 15,411.30 × 4,431.40
  4. Step 4: Simplify right side
    10,279.60x = 68,293,634.82
  5. Step 5: Solve for x
    x = 68,293,634.82/10,279.60
  6. Step 6: Final answer
    x = 6,643.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.