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Finding the Fourth Proportional to 10,869.71, 15,000.39 and 8,482.37

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Solution

The fourth proportional to 10,869.71, 15,000.39 and 8,482.37 is: 11,705.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.71 : 15,000.39 = 8,482.37 : x
  2. Step 2: Convert to fraction form
    10,869.71/15,000.39 = 8,482.37/x
  3. Step 3: Cross multiply
    10,869.71x = 15,000.39 × 8,482.37
  4. Step 4: Simplify right side
    10,869.71x = 127,238,783.12
  5. Step 5: Solve for x
    x = 127,238,783.12/10,869.71
  6. Step 6: Final answer
    x = 11,705.82

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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.