Home / 19,940.96-27,519.27-10,989.45

Finding the Fourth Proportional to 19,940.96, 27,519.27 and 10,989.45

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Solution

The fourth proportional to 19,940.96, 27,519.27 and 10,989.45 is: 15,165.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.96 : 27,519.27 = 10,989.45 : x
  2. Step 2: Convert to fraction form
    19,940.96/27,519.27 = 10,989.45/x
  3. Step 3: Cross multiply
    19,940.96x = 27,519.27 × 10,989.45
  4. Step 4: Simplify right side
    19,940.96x = 302,421,641.70
  5. Step 5: Solve for x
    x = 302,421,641.70/19,940.96
  6. Step 6: Final answer
    x = 15,165.85

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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.