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Finding the Fourth Proportional to 18,886.70, 26,062.04 and 10,929.42

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Solution

The fourth proportional to 18,886.70, 26,062.04 and 10,929.42 is: 15,081.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.70 : 26,062.04 = 10,929.42 : x
  2. Step 2: Convert to fraction form
    18,886.70/26,062.04 = 10,929.42/x
  3. Step 3: Cross multiply
    18,886.70x = 26,062.04 × 10,929.42
  4. Step 4: Simplify right side
    18,886.70x = 284,843,008.54
  5. Step 5: Solve for x
    x = 284,843,008.54/18,886.70
  6. Step 6: Final answer
    x = 15,081.67

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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.