Home / 27,906.71-38,509.25-15,803.72

Finding the Fourth Proportional to 27,906.71, 38,509.25 and 15,803.72

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Solution

The fourth proportional to 27,906.71, 38,509.25 and 15,803.72 is: 21,807.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.71 : 38,509.25 = 15,803.72 : x
  2. Step 2: Convert to fraction form
    27,906.71/38,509.25 = 15,803.72/x
  3. Step 3: Cross multiply
    27,906.71x = 38,509.25 × 15,803.72
  4. Step 4: Simplify right side
    27,906.71x = 608,589,251.37
  5. Step 5: Solve for x
    x = 608,589,251.37/27,906.71
  6. Step 6: Final answer
    x = 21,807.99

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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.