Home / 20,740.46-28,621.83-11,309

Finding the Fourth Proportional to 20,740.46, 28,621.83 and 11,309

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Solution

The fourth proportional to 20,740.46, 28,621.83 and 11,309 is: 15,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.46 : 28,621.83 = 11,309 : x
  2. Step 2: Convert to fraction form
    20,740.46/28,621.83 = 11,309/x
  3. Step 3: Cross multiply
    20,740.46x = 28,621.83 × 11,309
  4. Step 4: Simplify right side
    20,740.46x = 323,684,275.47
  5. Step 5: Solve for x
    x = 323,684,275.47/20,740.46
  6. Step 6: Final answer
    x = 15,606.42

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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.