Home / 19,931.89-27,506.04-10,979.43

Finding the Fourth Proportional to 19,931.89, 27,506.04 and 10,979.43

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Solution

The fourth proportional to 19,931.89, 27,506.04 and 10,979.43 is: 15,151.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.89 : 27,506.04 = 10,979.43 : x
  2. Step 2: Convert to fraction form
    19,931.89/27,506.04 = 10,979.43/x
  3. Step 3: Cross multiply
    19,931.89x = 27,506.04 × 10,979.43
  4. Step 4: Simplify right side
    19,931.89x = 302,000,640.76
  5. Step 5: Solve for x
    x = 302,000,640.76/19,931.89
  6. Step 6: Final answer
    x = 15,151.63

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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.