Home / 13,385.45-18,468.51-8,352.11

Finding the Fourth Proportional to 13,385.45, 18,468.51 and 8,352.11

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Solution

The fourth proportional to 13,385.45, 18,468.51 and 8,352.11 is: 11,523.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.45 : 18,468.51 = 8,352.11 : x
  2. Step 2: Convert to fraction form
    13,385.45/18,468.51 = 8,352.11/x
  3. Step 3: Cross multiply
    13,385.45x = 18,468.51 × 8,352.11
  4. Step 4: Simplify right side
    13,385.45x = 154,251,041.91
  5. Step 5: Solve for x
    x = 154,251,041.91/13,385.45
  6. Step 6: Final answer
    x = 11,523.78

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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.