Home / 18,759.86-28,159.61-18,336.32

Finding the Fourth Proportional to 18,759.86, 28,159.61 and 18,336.32

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Solution

The fourth proportional to 18,759.86, 28,159.61 and 18,336.32 is: 27,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.86 : 28,159.61 = 18,336.32 : x
  2. Step 2: Convert to fraction form
    18,759.86/28,159.61 = 18,336.32/x
  3. Step 3: Cross multiply
    18,759.86x = 28,159.61 × 18,336.32
  4. Step 4: Simplify right side
    18,759.86x = 516,343,620.04
  5. Step 5: Solve for x
    x = 516,343,620.04/18,759.86
  6. Step 6: Final answer
    x = 27,523.85

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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.