Home / 31,118.36-46,679.88-8,931.56

Finding the Fourth Proportional to 31,118.36, 46,679.88 and 8,931.56

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Solution

The fourth proportional to 31,118.36, 46,679.88 and 8,931.56 is: 13,398.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,118.36 : 46,679.88 = 8,931.56 : x
  2. Step 2: Convert to fraction form
    31,118.36/46,679.88 = 8,931.56/x
  3. Step 3: Cross multiply
    31,118.36x = 46,679.88 × 8,931.56
  4. Step 4: Simplify right side
    31,118.36x = 416,924,149.01
  5. Step 5: Solve for x
    x = 416,924,149.01/31,118.36
  6. Step 6: Final answer
    x = 13,398.01

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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.