Home / 31,615.40-47,418.32-11,889.36

Finding the Fourth Proportional to 31,615.40, 47,418.32 and 11,889.36

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Solution

The fourth proportional to 31,615.40, 47,418.32 and 11,889.36 is: 17,832.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,615.40 : 47,418.32 = 11,889.36 : x
  2. Step 2: Convert to fraction form
    31,615.40/47,418.32 = 11,889.36/x
  3. Step 3: Cross multiply
    31,615.40x = 47,418.32 × 11,889.36
  4. Step 4: Simplify right side
    31,615.40x = 563,773,506.80
  5. Step 5: Solve for x
    x = 563,773,506.80/31,615.40
  6. Step 6: Final answer
    x = 17,832.24

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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.