Home / 25,688.20-38,535.90-8,156.20

Finding the Fourth Proportional to 25,688.20, 38,535.90 and 8,156.20

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Solution

The fourth proportional to 25,688.20, 38,535.90 and 8,156.20 is: 12,235.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,688.20 : 38,535.90 = 8,156.20 : x
  2. Step 2: Convert to fraction form
    25,688.20/38,535.90 = 8,156.20/x
  3. Step 3: Cross multiply
    25,688.20x = 38,535.90 × 8,156.20
  4. Step 4: Simplify right side
    25,688.20x = 314,306,507.58
  5. Step 5: Solve for x
    x = 314,306,507.58/25,688.20
  6. Step 6: Final answer
    x = 12,235.44

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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.