Home / 9,800.79-13,521.76-6,443.34

Finding the Fourth Proportional to 9,800.79, 13,521.76 and 6,443.34

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Solution

The fourth proportional to 9,800.79, 13,521.76 and 6,443.34 is: 8,889.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,800.79 : 13,521.76 = 6,443.34 : x
  2. Step 2: Convert to fraction form
    9,800.79/13,521.76 = 6,443.34/x
  3. Step 3: Cross multiply
    9,800.79x = 13,521.76 × 6,443.34
  4. Step 4: Simplify right side
    9,800.79x = 87,125,297.08
  5. Step 5: Solve for x
    x = 87,125,297.08/9,800.79
  6. Step 6: Final answer
    x = 8,889.62

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Half scale
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Double scale
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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.