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Finding the Fourth Proportional to 18,954.47, 26,148.71 and 10,992.08

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Solution

The fourth proportional to 18,954.47, 26,148.71 and 10,992.08 is: 15,164.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.47 : 26,148.71 = 10,992.08 : x
  2. Step 2: Convert to fraction form
    18,954.47/26,148.71 = 10,992.08/x
  3. Step 3: Cross multiply
    18,954.47x = 26,148.71 × 10,992.08
  4. Step 4: Simplify right side
    18,954.47x = 287,428,805.07
  5. Step 5: Solve for x
    x = 287,428,805.07/18,954.47
  6. Step 6: Final answer
    x = 15,164.17

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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.