Home / 27,788.51-38,356.77-15,859.80

Finding the Fourth Proportional to 27,788.51, 38,356.77 and 15,859.80

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Solution

The fourth proportional to 27,788.51, 38,356.77 and 15,859.80 is: 21,891.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,788.51 : 38,356.77 = 15,859.80 : x
  2. Step 2: Convert to fraction form
    27,788.51/38,356.77 = 15,859.80/x
  3. Step 3: Cross multiply
    27,788.51x = 38,356.77 × 15,859.80
  4. Step 4: Simplify right side
    27,788.51x = 608,330,700.85
  5. Step 5: Solve for x
    x = 608,330,700.85/27,788.51
  6. Step 6: Final answer
    x = 21,891.45

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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.