Home / 13,310.77-18,366.90-7,645.78

Finding the Fourth Proportional to 13,310.77, 18,366.90 and 7,645.78

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Solution

The fourth proportional to 13,310.77, 18,366.90 and 7,645.78 is: 10,550.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.77 : 18,366.90 = 7,645.78 : x
  2. Step 2: Convert to fraction form
    13,310.77/18,366.90 = 7,645.78/x
  3. Step 3: Cross multiply
    13,310.77x = 18,366.90 × 7,645.78
  4. Step 4: Simplify right side
    13,310.77x = 140,429,276.68
  5. Step 5: Solve for x
    x = 140,429,276.68/13,310.77
  6. Step 6: Final answer
    x = 10,550.05

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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.