Home / 18,938.39-26,134.97-10,440.65

Finding the Fourth Proportional to 18,938.39, 26,134.97 and 10,440.65

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Solution

The fourth proportional to 18,938.39, 26,134.97 and 10,440.65 is: 14,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.39 : 26,134.97 = 10,440.65 : x
  2. Step 2: Convert to fraction form
    18,938.39/26,134.97 = 10,440.65/x
  3. Step 3: Cross multiply
    18,938.39x = 26,134.97 × 10,440.65
  4. Step 4: Simplify right side
    18,938.39x = 272,866,146.39
  5. Step 5: Solve for x
    x = 272,866,146.39/18,938.39
  6. Step 6: Final answer
    x = 14,408.10

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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.