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Finding the Fourth Proportional to 10,869.47, 15,000.06 and 8,482.13

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Solution

The fourth proportional to 10,869.47, 15,000.06 and 8,482.13 is: 11,705.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.47 : 15,000.06 = 8,482.13 : x
  2. Step 2: Convert to fraction form
    10,869.47/15,000.06 = 8,482.13/x
  3. Step 3: Cross multiply
    10,869.47x = 15,000.06 × 8,482.13
  4. Step 4: Simplify right side
    10,869.47x = 127,232,383.93
  5. Step 5: Solve for x
    x = 127,232,383.93/10,869.47
  6. Step 6: Final answer
    x = 11,705.49

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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.