Home / 10,640.72-14,687.52-6,394.88

Finding the Fourth Proportional to 10,640.72, 14,687.52 and 6,394.88

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Solution

The fourth proportional to 10,640.72, 14,687.52 and 6,394.88 is: 8,826.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.72 : 14,687.52 = 6,394.88 : x
  2. Step 2: Convert to fraction form
    10,640.72/14,687.52 = 6,394.88/x
  3. Step 3: Cross multiply
    10,640.72x = 14,687.52 × 6,394.88
  4. Step 4: Simplify right side
    10,640.72x = 93,924,927.90
  5. Step 5: Solve for x
    x = 93,924,927.90/10,640.72
  6. Step 6: Final answer
    x = 8,826.93

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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.