Home / 31,911.60-47,889.26-11,135.10

Finding the Fourth Proportional to 31,911.60, 47,889.26 and 11,135.10

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Solution

The fourth proportional to 31,911.60, 47,889.26 and 11,135.10 is: 16,710.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,911.60 : 47,889.26 = 11,135.10 : x
  2. Step 2: Convert to fraction form
    31,911.60/47,889.26 = 11,135.10/x
  3. Step 3: Cross multiply
    31,911.60x = 47,889.26 × 11,135.10
  4. Step 4: Simplify right side
    31,911.60x = 533,251,699.03
  5. Step 5: Solve for x
    x = 533,251,699.03/31,911.60
  6. Step 6: Final answer
    x = 16,710.28

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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.