Home / 13,390.25-18,470.85-8,352.05

Finding the Fourth Proportional to 13,390.25, 18,470.85 and 8,352.05

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Solution

The fourth proportional to 13,390.25, 18,470.85 and 8,352.05 is: 11,521.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.25 : 18,470.85 = 8,352.05 : x
  2. Step 2: Convert to fraction form
    13,390.25/18,470.85 = 8,352.05/x
  3. Step 3: Cross multiply
    13,390.25x = 18,470.85 × 8,352.05
  4. Step 4: Simplify right side
    13,390.25x = 154,269,462.74
  5. Step 5: Solve for x
    x = 154,269,462.74/13,390.25
  6. Step 6: Final answer
    x = 11,521.03

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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.