Home / 19,940.88-27,518.28-10,988.40

Finding the Fourth Proportional to 19,940.88, 27,518.28 and 10,988.40

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Solution

The fourth proportional to 19,940.88, 27,518.28 and 10,988.40 is: 15,163.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.88 : 27,518.28 = 10,988.40 : x
  2. Step 2: Convert to fraction form
    19,940.88/27,518.28 = 10,988.40/x
  3. Step 3: Cross multiply
    19,940.88x = 27,518.28 × 10,988.40
  4. Step 4: Simplify right side
    19,940.88x = 302,381,867.95
  5. Step 5: Solve for x
    x = 302,381,867.95/19,940.88
  6. Step 6: Final answer
    x = 15,163.92

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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.