Home / 20,756.15-31,130.87-5,961.71

Finding the Fourth Proportional to 20,756.15, 31,130.87 and 5,961.71

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Solution

The fourth proportional to 20,756.15, 31,130.87 and 5,961.71 is: 8,941.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.15 : 31,130.87 = 5,961.71 : x
  2. Step 2: Convert to fraction form
    20,756.15/31,130.87 = 5,961.71/x
  3. Step 3: Cross multiply
    20,756.15x = 31,130.87 × 5,961.71
  4. Step 4: Simplify right side
    20,756.15x = 185,593,033.52
  5. Step 5: Solve for x
    x = 185,593,033.52/20,756.15
  6. Step 6: Final answer
    x = 8,941.59

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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.