Home / 13,269.28-18,310.80-7,682.08

Finding the Fourth Proportional to 13,269.28, 18,310.80 and 7,682.08

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Solution

The fourth proportional to 13,269.28, 18,310.80 and 7,682.08 is: 10,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.28 : 18,310.80 = 7,682.08 : x
  2. Step 2: Convert to fraction form
    13,269.28/18,310.80 = 7,682.08/x
  3. Step 3: Cross multiply
    13,269.28x = 18,310.80 × 7,682.08
  4. Step 4: Simplify right side
    13,269.28x = 140,665,030.46
  5. Step 5: Solve for x
    x = 140,665,030.46/13,269.28
  6. Step 6: Final answer
    x = 10,600.80

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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.