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Finding the Fourth Proportional to 31,368.30, 47,052.45 and 7,993.86

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Solution

The fourth proportional to 31,368.30, 47,052.45 and 7,993.86 is: 11,990.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.30 : 47,052.45 = 7,993.86 : x
  2. Step 2: Convert to fraction form
    31,368.30/47,052.45 = 7,993.86/x
  3. Step 3: Cross multiply
    31,368.30x = 47,052.45 × 7,993.86
  4. Step 4: Simplify right side
    31,368.30x = 376,130,697.96
  5. Step 5: Solve for x
    x = 376,130,697.96/31,368.30
  6. Step 6: Final answer
    x = 11,990.79

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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.