Home / 19,943.07-27,521.76-10,990.55

Finding the Fourth Proportional to 19,943.07, 27,521.76 and 10,990.55

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Solution

The fourth proportional to 19,943.07, 27,521.76 and 10,990.55 is: 15,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.07 : 27,521.76 = 10,990.55 : x
  2. Step 2: Convert to fraction form
    19,943.07/27,521.76 = 10,990.55/x
  3. Step 3: Cross multiply
    19,943.07x = 27,521.76 × 10,990.55
  4. Step 4: Simplify right side
    19,943.07x = 302,479,141.76
  5. Step 5: Solve for x
    x = 302,479,141.76/19,943.07
  6. Step 6: Final answer
    x = 15,167.13

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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.