Home / 31,415.40-47,115.76-9,222.84

Finding the Fourth Proportional to 31,415.40, 47,115.76 and 9,222.84

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Solution

The fourth proportional to 31,415.40, 47,115.76 and 9,222.84 is: 13,832.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.40 : 47,115.76 = 9,222.84 : x
  2. Step 2: Convert to fraction form
    31,415.40/47,115.76 = 9,222.84/x
  3. Step 3: Cross multiply
    31,415.40x = 47,115.76 × 9,222.84
  4. Step 4: Simplify right side
    31,415.40x = 434,541,115.96
  5. Step 5: Solve for x
    x = 434,541,115.96/31,415.40
  6. Step 6: Final answer
    x = 13,832.11

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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.