Home / 18,887.78-26,065.82-10,390.56

Finding the Fourth Proportional to 18,887.78, 26,065.82 and 10,390.56

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Solution

The fourth proportional to 18,887.78, 26,065.82 and 10,390.56 is: 14,339.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.78 : 26,065.82 = 10,390.56 : x
  2. Step 2: Convert to fraction form
    18,887.78/26,065.82 = 10,390.56/x
  3. Step 3: Cross multiply
    18,887.78x = 26,065.82 × 10,390.56
  4. Step 4: Simplify right side
    18,887.78x = 270,838,466.66
  5. Step 5: Solve for x
    x = 270,838,466.66/18,887.78
  6. Step 6: Final answer
    x = 14,339.35

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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.