Home / 20,303.77-28,019.82-11,351.65

Finding the Fourth Proportional to 20,303.77, 28,019.82 and 11,351.65

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Solution

The fourth proportional to 20,303.77, 28,019.82 and 11,351.65 is: 15,665.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.77 : 28,019.82 = 11,351.65 : x
  2. Step 2: Convert to fraction form
    20,303.77/28,019.82 = 11,351.65/x
  3. Step 3: Cross multiply
    20,303.77x = 28,019.82 × 11,351.65
  4. Step 4: Simplify right side
    20,303.77x = 318,071,189.70
  5. Step 5: Solve for x
    x = 318,071,189.70/20,303.77
  6. Step 6: Final answer
    x = 15,665.62

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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.