Home / 27,891.54-38,490.39-15,317.10

Finding the Fourth Proportional to 27,891.54, 38,490.39 and 15,317.10

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Solution

The fourth proportional to 27,891.54, 38,490.39 and 15,317.10 is: 21,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,891.54 : 38,490.39 = 15,317.10 : x
  2. Step 2: Convert to fraction form
    27,891.54/38,490.39 = 15,317.10/x
  3. Step 3: Cross multiply
    27,891.54x = 38,490.39 × 15,317.10
  4. Step 4: Simplify right side
    27,891.54x = 589,561,152.67
  5. Step 5: Solve for x
    x = 589,561,152.67/27,891.54
  6. Step 6: Final answer
    x = 21,137.63

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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.