Home / 27,764-38,315.24-15,188.75

Finding the Fourth Proportional to 27,764, 38,315.24 and 15,188.75

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Solution

The fourth proportional to 27,764, 38,315.24 and 15,188.75 is: 20,960.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,764 : 38,315.24 = 15,188.75 : x
  2. Step 2: Convert to fraction form
    27,764/38,315.24 = 15,188.75/x
  3. Step 3: Cross multiply
    27,764x = 38,315.24 × 15,188.75
  4. Step 4: Simplify right side
    27,764x = 581,960,525.61
  5. Step 5: Solve for x
    x = 581,960,525.61/27,764
  6. Step 6: Final answer
    x = 20,960.98

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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.