Home / 31,985.60-47,976.88-11,207.52

Finding the Fourth Proportional to 31,985.60, 47,976.88 and 11,207.52

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Solution

The fourth proportional to 31,985.60, 47,976.88 and 11,207.52 is: 16,810.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.60 : 47,976.88 = 11,207.52 : x
  2. Step 2: Convert to fraction form
    31,985.60/47,976.88 = 11,207.52/x
  3. Step 3: Cross multiply
    31,985.60x = 47,976.88 × 11,207.52
  4. Step 4: Simplify right side
    31,985.60x = 537,701,842.14
  5. Step 5: Solve for x
    x = 537,701,842.14/31,985.60
  6. Step 6: Final answer
    x = 16,810.75

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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.