Home / 13,512.80-18,625.20-10,661.60

Finding the Fourth Proportional to 13,512.80, 18,625.20 and 10,661.60

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Solution

The fourth proportional to 13,512.80, 18,625.20 and 10,661.60 is: 14,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.80 : 18,625.20 = 10,661.60 : x
  2. Step 2: Convert to fraction form
    13,512.80/18,625.20 = 10,661.60/x
  3. Step 3: Cross multiply
    13,512.80x = 18,625.20 × 10,661.60
  4. Step 4: Simplify right side
    13,512.80x = 198,574,432.32
  5. Step 5: Solve for x
    x = 198,574,432.32/13,512.80
  6. Step 6: Final answer
    x = 14,695.28

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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.