Home / 31,616.15-47,424.45-12,891.11

Finding the Fourth Proportional to 31,616.15, 47,424.45 and 12,891.11

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Solution

The fourth proportional to 31,616.15, 47,424.45 and 12,891.11 is: 19,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,616.15 : 47,424.45 = 12,891.11 : x
  2. Step 2: Convert to fraction form
    31,616.15/47,424.45 = 12,891.11/x
  3. Step 3: Cross multiply
    31,616.15x = 47,424.45 × 12,891.11
  4. Step 4: Simplify right side
    31,616.15x = 611,353,564.52
  5. Step 5: Solve for x
    x = 611,353,564.52/31,616.15
  6. Step 6: Final answer
    x = 19,336.75

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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.