Home / 18,716.02-28,074.06-12,488.20

Finding the Fourth Proportional to 18,716.02, 28,074.06 and 12,488.20

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Solution

The fourth proportional to 18,716.02, 28,074.06 and 12,488.20 is: 18,732.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.02 : 28,074.06 = 12,488.20 : x
  2. Step 2: Convert to fraction form
    18,716.02/28,074.06 = 12,488.20/x
  3. Step 3: Cross multiply
    18,716.02x = 28,074.06 × 12,488.20
  4. Step 4: Simplify right side
    18,716.02x = 350,594,476.09
  5. Step 5: Solve for x
    x = 350,594,476.09/18,716.02
  6. Step 6: Final answer
    x = 18,732.32

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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.