Home / 27,815.96-38,385.50-15,240.62

Finding the Fourth Proportional to 27,815.96, 38,385.50 and 15,240.62

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Solution

The fourth proportional to 27,815.96, 38,385.50 and 15,240.62 is: 21,031.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.96 : 38,385.50 = 15,240.62 : x
  2. Step 2: Convert to fraction form
    27,815.96/38,385.50 = 15,240.62/x
  3. Step 3: Cross multiply
    27,815.96x = 38,385.50 × 15,240.62
  4. Step 4: Simplify right side
    27,815.96x = 585,018,819.01
  5. Step 5: Solve for x
    x = 585,018,819.01/27,815.96
  6. Step 6: Final answer
    x = 21,031.77

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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.