Home / 19,418.87-26,797.78-10,920.99

Finding the Fourth Proportional to 19,418.87, 26,797.78 and 10,920.99

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Solution

The fourth proportional to 19,418.87, 26,797.78 and 10,920.99 is: 15,070.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,418.87 : 26,797.78 = 10,920.99 : x
  2. Step 2: Convert to fraction form
    19,418.87/26,797.78 = 10,920.99/x
  3. Step 3: Cross multiply
    19,418.87x = 26,797.78 × 10,920.99
  4. Step 4: Simplify right side
    19,418.87x = 292,658,153.41
  5. Step 5: Solve for x
    x = 292,658,153.41/19,418.87
  6. Step 6: Final answer
    x = 15,070.82

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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.