Home / 13,385.75-18,449.27-8,901.48

Finding the Fourth Proportional to 13,385.75, 18,449.27 and 8,901.48

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Solution

The fourth proportional to 13,385.75, 18,449.27 and 8,901.48 is: 12,268.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.75 : 18,449.27 = 8,901.48 : x
  2. Step 2: Convert to fraction form
    13,385.75/18,449.27 = 8,901.48/x
  3. Step 3: Cross multiply
    13,385.75x = 18,449.27 × 8,901.48
  4. Step 4: Simplify right side
    13,385.75x = 164,225,763.41
  5. Step 5: Solve for x
    x = 164,225,763.41/13,385.75
  6. Step 6: Final answer
    x = 12,268.71

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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.