Home / 31,739.06-47,640.60-13,977.62

Finding the Fourth Proportional to 31,739.06, 47,640.60 and 13,977.62

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Solution

The fourth proportional to 31,739.06, 47,640.60 and 13,977.62 is: 20,980.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,739.06 : 47,640.60 = 13,977.62 : x
  2. Step 2: Convert to fraction form
    31,739.06/47,640.60 = 13,977.62/x
  3. Step 3: Cross multiply
    31,739.06x = 47,640.60 × 13,977.62
  4. Step 4: Simplify right side
    31,739.06x = 665,901,965.17
  5. Step 5: Solve for x
    x = 665,901,965.17/31,739.06
  6. Step 6: Final answer
    x = 20,980.52

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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.