Home / 31,985.52-47,999.64-11,209.02

Finding the Fourth Proportional to 31,985.52, 47,999.64 and 11,209.02

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Solution

The fourth proportional to 31,985.52, 47,999.64 and 11,209.02 is: 16,821.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.52 : 47,999.64 = 11,209.02 : x
  2. Step 2: Convert to fraction form
    31,985.52/47,999.64 = 11,209.02/x
  3. Step 3: Cross multiply
    31,985.52x = 47,999.64 × 11,209.02
  4. Step 4: Simplify right side
    31,985.52x = 538,028,924.75
  5. Step 5: Solve for x
    x = 538,028,924.75/31,985.52
  6. Step 6: Final answer
    x = 16,821.02

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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.