Home / 31,703.76-47,556.18-11,991.60

Finding the Fourth Proportional to 31,703.76, 47,556.18 and 11,991.60

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Solution

The fourth proportional to 31,703.76, 47,556.18 and 11,991.60 is: 17,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,703.76 : 47,556.18 = 11,991.60 : x
  2. Step 2: Convert to fraction form
    31,703.76/47,556.18 = 11,991.60/x
  3. Step 3: Cross multiply
    31,703.76x = 47,556.18 × 11,991.60
  4. Step 4: Simplify right side
    31,703.76x = 570,274,688.09
  5. Step 5: Solve for x
    x = 570,274,688.09/31,703.76
  6. Step 6: Final answer
    x = 17,987.60

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1.5x scale

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.