Home / 19,940.38-27,518.95-10,987.88

Finding the Fourth Proportional to 19,940.38, 27,518.95 and 10,987.88

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Solution

The fourth proportional to 19,940.38, 27,518.95 and 10,987.88 is: 15,163.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.38 : 27,518.95 = 10,987.88 : x
  2. Step 2: Convert to fraction form
    19,940.38/27,518.95 = 10,987.88/x
  3. Step 3: Cross multiply
    19,940.38x = 27,518.95 × 10,987.88
  4. Step 4: Simplify right side
    19,940.38x = 302,374,824.06
  5. Step 5: Solve for x
    x = 302,374,824.06/19,940.38
  6. Step 6: Final answer
    x = 15,163.94

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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.