Home / 27,815.50-38,385.39-15,240.54

Finding the Fourth Proportional to 27,815.50, 38,385.39 and 15,240.54

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Solution

The fourth proportional to 27,815.50, 38,385.39 and 15,240.54 is: 21,031.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.50 : 38,385.39 = 15,240.54 : x
  2. Step 2: Convert to fraction form
    27,815.50/38,385.39 = 15,240.54/x
  3. Step 3: Cross multiply
    27,815.50x = 38,385.39 × 15,240.54
  4. Step 4: Simplify right side
    27,815.50x = 585,014,071.71
  5. Step 5: Solve for x
    x = 585,014,071.71/27,815.50
  6. Step 6: Final answer
    x = 21,031.95

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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.