Home / 27,718.18-38,252.85-15,782.56

Finding the Fourth Proportional to 27,718.18, 38,252.85 and 15,782.56

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Solution

The fourth proportional to 27,718.18, 38,252.85 and 15,782.56 is: 21,780.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,718.18 : 38,252.85 = 15,782.56 : x
  2. Step 2: Convert to fraction form
    27,718.18/38,252.85 = 15,782.56/x
  3. Step 3: Cross multiply
    27,718.18x = 38,252.85 × 15,782.56
  4. Step 4: Simplify right side
    27,718.18x = 603,727,900.30
  5. Step 5: Solve for x
    x = 603,727,900.30/27,718.18
  6. Step 6: Final answer
    x = 21,780.94

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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.