Home / 19,788.36-27,307.68-11,290.26

Finding the Fourth Proportional to 19,788.36, 27,307.68 and 11,290.26

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Solution

The fourth proportional to 19,788.36, 27,307.68 and 11,290.26 is: 15,580.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.36 : 27,307.68 = 11,290.26 : x
  2. Step 2: Convert to fraction form
    19,788.36/27,307.68 = 11,290.26/x
  3. Step 3: Cross multiply
    19,788.36x = 27,307.68 × 11,290.26
  4. Step 4: Simplify right side
    19,788.36x = 308,310,807.20
  5. Step 5: Solve for x
    x = 308,310,807.20/19,788.36
  6. Step 6: Final answer
    x = 15,580.41

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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.