Home / 18,788.64-28,135.28-11,287.52

Finding the Fourth Proportional to 18,788.64, 28,135.28 and 11,287.52

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Solution

The fourth proportional to 18,788.64, 28,135.28 and 11,287.52 is: 16,902.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.64 : 28,135.28 = 11,287.52 : x
  2. Step 2: Convert to fraction form
    18,788.64/28,135.28 = 11,287.52/x
  3. Step 3: Cross multiply
    18,788.64x = 28,135.28 × 11,287.52
  4. Step 4: Simplify right side
    18,788.64x = 317,577,535.71
  5. Step 5: Solve for x
    x = 317,577,535.71/18,788.64
  6. Step 6: Final answer
    x = 16,902.64

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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.