Home / 27,797.40-38,358.75-15,861.87

Finding the Fourth Proportional to 27,797.40, 38,358.75 and 15,861.87

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Solution

The fourth proportional to 27,797.40, 38,358.75 and 15,861.87 is: 21,888.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,797.40 : 38,358.75 = 15,861.87 : x
  2. Step 2: Convert to fraction form
    27,797.40/38,358.75 = 15,861.87/x
  3. Step 3: Cross multiply
    27,797.40x = 38,358.75 × 15,861.87
  4. Step 4: Simplify right side
    27,797.40x = 608,441,505.86
  5. Step 5: Solve for x
    x = 608,441,505.86/27,797.40
  6. Step 6: Final answer
    x = 21,888.43

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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.