Home / 12,328.67-18,488.14-5,309.21

Finding the Fourth Proportional to 12,328.67, 18,488.14 and 5,309.21

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Solution

The fourth proportional to 12,328.67, 18,488.14 and 5,309.21 is: 7,961.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.67 : 18,488.14 = 5,309.21 : x
  2. Step 2: Convert to fraction form
    12,328.67/18,488.14 = 5,309.21/x
  3. Step 3: Cross multiply
    12,328.67x = 18,488.14 × 5,309.21
  4. Step 4: Simplify right side
    12,328.67x = 98,157,450.72
  5. Step 5: Solve for x
    x = 98,157,450.72/12,328.67
  6. Step 6: Final answer
    x = 7,961.72

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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.