Home / 27,649.30-38,156.10-15,716.60

Finding the Fourth Proportional to 27,649.30, 38,156.10 and 15,716.60

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Solution

The fourth proportional to 27,649.30, 38,156.10 and 15,716.60 is: 21,688.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,649.30 : 38,156.10 = 15,716.60 : x
  2. Step 2: Convert to fraction form
    27,649.30/38,156.10 = 15,716.60/x
  3. Step 3: Cross multiply
    27,649.30x = 38,156.10 × 15,716.60
  4. Step 4: Simplify right side
    27,649.30x = 599,684,161.26
  5. Step 5: Solve for x
    x = 599,684,161.26/27,649.30
  6. Step 6: Final answer
    x = 21,688.95

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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.