Home / 31,396.40-47,089.20-11,664.80

Finding the Fourth Proportional to 31,396.40, 47,089.20 and 11,664.80

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Solution

The fourth proportional to 31,396.40, 47,089.20 and 11,664.80 is: 17,495.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,396.40 : 47,089.20 = 11,664.80 : x
  2. Step 2: Convert to fraction form
    31,396.40/47,089.20 = 11,664.80/x
  3. Step 3: Cross multiply
    31,396.40x = 47,089.20 × 11,664.80
  4. Step 4: Simplify right side
    31,396.40x = 549,286,100.16
  5. Step 5: Solve for x
    x = 549,286,100.16/31,396.40
  6. Step 6: Final answer
    x = 17,495.19

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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.