Home / 19,940.64-27,518.40-10,988.02

Finding the Fourth Proportional to 19,940.64, 27,518.40 and 10,988.02

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Solution

The fourth proportional to 19,940.64, 27,518.40 and 10,988.02 is: 15,163.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.64 : 27,518.40 = 10,988.02 : x
  2. Step 2: Convert to fraction form
    19,940.64/27,518.40 = 10,988.02/x
  3. Step 3: Cross multiply
    19,940.64x = 27,518.40 × 10,988.02
  4. Step 4: Simplify right side
    19,940.64x = 302,372,729.57
  5. Step 5: Solve for x
    x = 302,372,729.57/19,940.64
  6. Step 6: Final answer
    x = 15,163.64

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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.