Home / 18,920.39-26,112.18-10,423.38

Finding the Fourth Proportional to 18,920.39, 26,112.18 and 10,423.38

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Solution

The fourth proportional to 18,920.39, 26,112.18 and 10,423.38 is: 14,385.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.39 : 26,112.18 = 10,423.38 : x
  2. Step 2: Convert to fraction form
    18,920.39/26,112.18 = 10,423.38/x
  3. Step 3: Cross multiply
    18,920.39x = 26,112.18 × 10,423.38
  4. Step 4: Simplify right side
    18,920.39x = 272,177,128.21
  5. Step 5: Solve for x
    x = 272,177,128.21/18,920.39
  6. Step 6: Final answer
    x = 14,385.39

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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.