Home / 25,695.78-38,520.30-9,890.73

Finding the Fourth Proportional to 25,695.78, 38,520.30 and 9,890.73

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Solution

The fourth proportional to 25,695.78, 38,520.30 and 9,890.73 is: 14,827.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,695.78 : 38,520.30 = 9,890.73 : x
  2. Step 2: Convert to fraction form
    25,695.78/38,520.30 = 9,890.73/x
  3. Step 3: Cross multiply
    25,695.78x = 38,520.30 × 9,890.73
  4. Step 4: Simplify right side
    25,695.78x = 380,993,886.82
  5. Step 5: Solve for x
    x = 380,993,886.82/25,695.78
  6. Step 6: Final answer
    x = 14,827.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.