Home / 13,517.76-18,650.16-8,803.20

Finding the Fourth Proportional to 13,517.76, 18,650.16 and 8,803.20

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Solution

The fourth proportional to 13,517.76, 18,650.16 and 8,803.20 is: 12,145.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.76 : 18,650.16 = 8,803.20 : x
  2. Step 2: Convert to fraction form
    13,517.76/18,650.16 = 8,803.20/x
  3. Step 3: Cross multiply
    13,517.76x = 18,650.16 × 8,803.20
  4. Step 4: Simplify right side
    13,517.76x = 164,181,088.51
  5. Step 5: Solve for x
    x = 164,181,088.51/13,517.76
  6. Step 6: Final answer
    x = 12,145.58

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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.