Home / 19,940.63-27,518.76-10,988.78

Finding the Fourth Proportional to 19,940.63, 27,518.76 and 10,988.78

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Solution

The fourth proportional to 19,940.63, 27,518.76 and 10,988.78 is: 15,164.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.63 : 27,518.76 = 10,988.78 : x
  2. Step 2: Convert to fraction form
    19,940.63/27,518.76 = 10,988.78/x
  3. Step 3: Cross multiply
    19,940.63x = 27,518.76 × 10,988.78
  4. Step 4: Simplify right side
    19,940.63x = 302,397,461.92
  5. Step 5: Solve for x
    x = 302,397,461.92/19,940.63
  6. Step 6: Final answer
    x = 15,164.89

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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.