Home / 18,917.47-28,376.44-6,437.75

Finding the Fourth Proportional to 18,917.47, 28,376.44 and 6,437.75

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Solution

The fourth proportional to 18,917.47, 28,376.44 and 6,437.75 is: 9,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.47 : 28,376.44 = 6,437.75 : x
  2. Step 2: Convert to fraction form
    18,917.47/28,376.44 = 6,437.75/x
  3. Step 3: Cross multiply
    18,917.47x = 28,376.44 × 6,437.75
  4. Step 4: Simplify right side
    18,917.47x = 182,680,426.61
  5. Step 5: Solve for x
    x = 182,680,426.61/18,917.47
  6. Step 6: Final answer
    x = 9,656.70

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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.