Home / 18,655.28-28,014.12-11,651.60

Finding the Fourth Proportional to 18,655.28, 28,014.12 and 11,651.60

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Solution

The fourth proportional to 18,655.28, 28,014.12 and 11,651.60 is: 17,496.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.28 : 28,014.12 = 11,651.60 : x
  2. Step 2: Convert to fraction form
    18,655.28/28,014.12 = 11,651.60/x
  3. Step 3: Cross multiply
    18,655.28x = 28,014.12 × 11,651.60
  4. Step 4: Simplify right side
    18,655.28x = 326,409,320.59
  5. Step 5: Solve for x
    x = 326,409,320.59/18,655.28
  6. Step 6: Final answer
    x = 17,496.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.