Home / 18,941.61-26,138.78-10,443.60

Finding the Fourth Proportional to 18,941.61, 26,138.78 and 10,443.60

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Solution

The fourth proportional to 18,941.61, 26,138.78 and 10,443.60 is: 14,411.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.61 : 26,138.78 = 10,443.60 : x
  2. Step 2: Convert to fraction form
    18,941.61/26,138.78 = 10,443.60/x
  3. Step 3: Cross multiply
    18,941.61x = 26,138.78 × 10,443.60
  4. Step 4: Simplify right side
    18,941.61x = 272,982,949.75
  5. Step 5: Solve for x
    x = 272,982,949.75/18,941.61
  6. Step 6: Final answer
    x = 14,411.81

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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.