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Finding the Fourth Proportional to 11,398.71, 15,730.11 and 6,362.80

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Solution

The fourth proportional to 11,398.71, 15,730.11 and 6,362.80 is: 8,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.71 : 15,730.11 = 6,362.80 : x
  2. Step 2: Convert to fraction form
    11,398.71/15,730.11 = 6,362.80/x
  3. Step 3: Cross multiply
    11,398.71x = 15,730.11 × 6,362.80
  4. Step 4: Simplify right side
    11,398.71x = 100,087,602.01
  5. Step 5: Solve for x
    x = 100,087,602.01/11,398.71
  6. Step 6: Final answer
    x = 8,780.61

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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.