Home / 31,981.08-47,971.71-11,199.72

Finding the Fourth Proportional to 31,981.08, 47,971.71 and 11,199.72

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Solution

The fourth proportional to 31,981.08, 47,971.71 and 11,199.72 is: 16,799.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,981.08 : 47,971.71 = 11,199.72 : x
  2. Step 2: Convert to fraction form
    31,981.08/47,971.71 = 11,199.72/x
  3. Step 3: Cross multiply
    31,981.08x = 47,971.71 × 11,199.72
  4. Step 4: Simplify right side
    31,981.08x = 537,269,719.92
  5. Step 5: Solve for x
    x = 537,269,719.92/31,981.08
  6. Step 6: Final answer
    x = 16,799.61

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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.