Home / 31,343.21-47,015.05-9,172.05

Finding the Fourth Proportional to 31,343.21, 47,015.05 and 9,172.05

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Solution

The fourth proportional to 31,343.21, 47,015.05 and 9,172.05 is: 13,758.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,343.21 : 47,015.05 = 9,172.05 : x
  2. Step 2: Convert to fraction form
    31,343.21/47,015.05 = 9,172.05/x
  3. Step 3: Cross multiply
    31,343.21x = 47,015.05 × 9,172.05
  4. Step 4: Simplify right side
    31,343.21x = 431,224,207.31
  5. Step 5: Solve for x
    x = 431,224,207.31/31,343.21
  6. Step 6: Final answer
    x = 13,758.14

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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.