Home / 18,732.39-28,112.40-8,871.65

Finding the Fourth Proportional to 18,732.39, 28,112.40 and 8,871.65

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Solution

The fourth proportional to 18,732.39, 28,112.40 and 8,871.65 is: 13,314.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,732.39 : 28,112.40 = 8,871.65 : x
  2. Step 2: Convert to fraction form
    18,732.39/28,112.40 = 8,871.65/x
  3. Step 3: Cross multiply
    18,732.39x = 28,112.40 × 8,871.65
  4. Step 4: Simplify right side
    18,732.39x = 249,403,232.90
  5. Step 5: Solve for x
    x = 249,403,232.90/18,732.39
  6. Step 6: Final answer
    x = 13,314.01

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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.