Home / 31,920.99-47,884.76-12,216.12

Finding the Fourth Proportional to 31,920.99, 47,884.76 and 12,216.12

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Solution

The fourth proportional to 31,920.99, 47,884.76 and 12,216.12 is: 18,325.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,920.99 : 47,884.76 = 12,216.12 : x
  2. Step 2: Convert to fraction form
    31,920.99/47,884.76 = 12,216.12/x
  3. Step 3: Cross multiply
    31,920.99x = 47,884.76 × 12,216.12
  4. Step 4: Simplify right side
    31,920.99x = 584,965,913.25
  5. Step 5: Solve for x
    x = 584,965,913.25/31,920.99
  6. Step 6: Final answer
    x = 18,325.43

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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.