Home / 27,803.07-38,359.80-15,865.68

Finding the Fourth Proportional to 27,803.07, 38,359.80 and 15,865.68

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Solution

The fourth proportional to 27,803.07, 38,359.80 and 15,865.68 is: 21,889.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,803.07 : 38,359.80 = 15,865.68 : x
  2. Step 2: Convert to fraction form
    27,803.07/38,359.80 = 15,865.68/x
  3. Step 3: Cross multiply
    27,803.07x = 38,359.80 × 15,865.68
  4. Step 4: Simplify right side
    27,803.07x = 608,604,311.66
  5. Step 5: Solve for x
    x = 608,604,311.66/27,803.07
  6. Step 6: Final answer
    x = 21,889.82

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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.