Home / 18,930.46-26,120.98-10,971.15

Finding the Fourth Proportional to 18,930.46, 26,120.98 and 10,971.15

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Solution

The fourth proportional to 18,930.46, 26,120.98 and 10,971.15 is: 15,138.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.46 : 26,120.98 = 10,971.15 : x
  2. Step 2: Convert to fraction form
    18,930.46/26,120.98 = 10,971.15/x
  3. Step 3: Cross multiply
    18,930.46x = 26,120.98 × 10,971.15
  4. Step 4: Simplify right side
    18,930.46x = 286,577,105.49
  5. Step 5: Solve for x
    x = 286,577,105.49/18,930.46
  6. Step 6: Final answer
    x = 15,138.41

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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.