Home / 26,190.78-36,140.31-15,434.99

Finding the Fourth Proportional to 26,190.78, 36,140.31 and 15,434.99

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Solution

The fourth proportional to 26,190.78, 36,140.31 and 15,434.99 is: 21,298.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,190.78 : 36,140.31 = 15,434.99 : x
  2. Step 2: Convert to fraction form
    26,190.78/36,140.31 = 15,434.99/x
  3. Step 3: Cross multiply
    26,190.78x = 36,140.31 × 15,434.99
  4. Step 4: Simplify right side
    26,190.78x = 557,825,278.27
  5. Step 5: Solve for x
    x = 557,825,278.27/26,190.78
  6. Step 6: Final answer
    x = 21,298.54

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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.