Home / 31,552.11-47,315.21-11,820.51

Finding the Fourth Proportional to 31,552.11, 47,315.21 and 11,820.51

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Solution

The fourth proportional to 31,552.11, 47,315.21 and 11,820.51 is: 17,725.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,552.11 : 47,315.21 = 11,820.51 : x
  2. Step 2: Convert to fraction form
    31,552.11/47,315.21 = 11,820.51/x
  3. Step 3: Cross multiply
    31,552.11x = 47,315.21 × 11,820.51
  4. Step 4: Simplify right side
    31,552.11x = 559,289,853.85
  5. Step 5: Solve for x
    x = 559,289,853.85/31,552.11
  6. Step 6: Final answer
    x = 17,725.91

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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.