Home / 19,788.48-27,305.55-11,290.10

Finding the Fourth Proportional to 19,788.48, 27,305.55 and 11,290.10

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Solution

The fourth proportional to 19,788.48, 27,305.55 and 11,290.10 is: 15,578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.48 : 27,305.55 = 11,290.10 : x
  2. Step 2: Convert to fraction form
    19,788.48/27,305.55 = 11,290.10/x
  3. Step 3: Cross multiply
    19,788.48x = 27,305.55 × 11,290.10
  4. Step 4: Simplify right side
    19,788.48x = 308,282,253.53
  5. Step 5: Solve for x
    x = 308,282,253.53/19,788.48
  6. Step 6: Final answer
    x = 15,578.87

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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.