Home / 25,811.02-38,712.87-8,278.57

Finding the Fourth Proportional to 25,811.02, 38,712.87 and 8,278.57

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Solution

The fourth proportional to 25,811.02, 38,712.87 and 8,278.57 is: 12,416.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,811.02 : 38,712.87 = 8,278.57 : x
  2. Step 2: Convert to fraction form
    25,811.02/38,712.87 = 8,278.57/x
  3. Step 3: Cross multiply
    25,811.02x = 38,712.87 × 8,278.57
  4. Step 4: Simplify right side
    25,811.02x = 320,487,204.20
  5. Step 5: Solve for x
    x = 320,487,204.20/25,811.02
  6. Step 6: Final answer
    x = 12,416.68

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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.