Home / 13,439.38-18,554.10-8,977.90

Finding the Fourth Proportional to 13,439.38, 18,554.10 and 8,977.90

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Solution

The fourth proportional to 13,439.38, 18,554.10 and 8,977.90 is: 12,394.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.38 : 18,554.10 = 8,977.90 : x
  2. Step 2: Convert to fraction form
    13,439.38/18,554.10 = 8,977.90/x
  3. Step 3: Cross multiply
    13,439.38x = 18,554.10 × 8,977.90
  4. Step 4: Simplify right side
    13,439.38x = 166,576,854.39
  5. Step 5: Solve for x
    x = 166,576,854.39/13,439.38
  6. Step 6: Final answer
    x = 12,394.68

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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.