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Finding the Fourth Proportional to 12,030.78, 18,046.17 and 5,869.50

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Solution

The fourth proportional to 12,030.78, 18,046.17 and 5,869.50 is: 8,804.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,030.78 : 18,046.17 = 5,869.50 : x
  2. Step 2: Convert to fraction form
    12,030.78/18,046.17 = 5,869.50/x
  3. Step 3: Cross multiply
    12,030.78x = 18,046.17 × 5,869.50
  4. Step 4: Simplify right side
    12,030.78x = 105,921,994.82
  5. Step 5: Solve for x
    x = 105,921,994.82/12,030.78
  6. Step 6: Final answer
    x = 8,804.25

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.