Home / 19,940.79-27,518.63-10,988.17

Finding the Fourth Proportional to 19,940.79, 27,518.63 and 10,988.17

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Solution

The fourth proportional to 19,940.79, 27,518.63 and 10,988.17 is: 15,163.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.79 : 27,518.63 = 10,988.17 : x
  2. Step 2: Convert to fraction form
    19,940.79/27,518.63 = 10,988.17/x
  3. Step 3: Cross multiply
    19,940.79x = 27,518.63 × 10,988.17
  4. Step 4: Simplify right side
    19,940.79x = 302,379,260.87
  5. Step 5: Solve for x
    x = 302,379,260.87/19,940.79
  6. Step 6: Final answer
    x = 15,163.85

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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.