Home / 15,775.35-21,769.32-8,701.62

Finding the Fourth Proportional to 15,775.35, 21,769.32 and 8,701.62

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Solution

The fourth proportional to 15,775.35, 21,769.32 and 8,701.62 is: 12,007.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,775.35 : 21,769.32 = 8,701.62 : x
  2. Step 2: Convert to fraction form
    15,775.35/21,769.32 = 8,701.62/x
  3. Step 3: Cross multiply
    15,775.35x = 21,769.32 × 8,701.62
  4. Step 4: Simplify right side
    15,775.35x = 189,428,350.30
  5. Step 5: Solve for x
    x = 189,428,350.30/15,775.35
  6. Step 6: Final answer
    x = 12,007.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.