Home / 19,881.38-27,436.36-10,929.80

Finding the Fourth Proportional to 19,881.38, 27,436.36 and 10,929.80

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Solution

The fourth proportional to 19,881.38, 27,436.36 and 10,929.80 is: 15,083.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.38 : 27,436.36 = 10,929.80 : x
  2. Step 2: Convert to fraction form
    19,881.38/27,436.36 = 10,929.80/x
  3. Step 3: Cross multiply
    19,881.38x = 27,436.36 × 10,929.80
  4. Step 4: Simplify right side
    19,881.38x = 299,873,927.53
  5. Step 5: Solve for x
    x = 299,873,927.53/19,881.38
  6. Step 6: Final answer
    x = 15,083.15

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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.