Home / 31,699.76-47,550.18-11,987.60

Finding the Fourth Proportional to 31,699.76, 47,550.18 and 11,987.60

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Solution

The fourth proportional to 31,699.76, 47,550.18 and 11,987.60 is: 17,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,699.76 : 47,550.18 = 11,987.60 : x
  2. Step 2: Convert to fraction form
    31,699.76/47,550.18 = 11,987.60/x
  3. Step 3: Cross multiply
    31,699.76x = 47,550.18 × 11,987.60
  4. Step 4: Simplify right side
    31,699.76x = 570,012,537.77
  5. Step 5: Solve for x
    x = 570,012,537.77/31,699.76
  6. Step 6: Final answer
    x = 17,981.60

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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.