Home / 18,920.78-26,112.72-10,423.77

Finding the Fourth Proportional to 18,920.78, 26,112.72 and 10,423.77

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Solution

The fourth proportional to 18,920.78, 26,112.72 and 10,423.77 is: 14,385.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.78 : 26,112.72 = 10,423.77 : x
  2. Step 2: Convert to fraction form
    18,920.78/26,112.72 = 10,423.77/x
  3. Step 3: Cross multiply
    18,920.78x = 26,112.72 × 10,423.77
  4. Step 4: Simplify right side
    18,920.78x = 272,192,922.07
  5. Step 5: Solve for x
    x = 272,192,922.07/18,920.78
  6. Step 6: Final answer
    x = 14,385.93

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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.