Home / 18,947.35-28,423.61-6,464.02

Finding the Fourth Proportional to 18,947.35, 28,423.61 and 6,464.02

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Solution

The fourth proportional to 18,947.35, 28,423.61 and 6,464.02 is: 9,696.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.35 : 28,423.61 = 6,464.02 : x
  2. Step 2: Convert to fraction form
    18,947.35/28,423.61 = 6,464.02/x
  3. Step 3: Cross multiply
    18,947.35x = 28,423.61 × 6,464.02
  4. Step 4: Simplify right side
    18,947.35x = 183,730,712.45
  5. Step 5: Solve for x
    x = 183,730,712.45/18,947.35
  6. Step 6: Final answer
    x = 9,696.91

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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.