Home / 31,379.66-47,080.29-19,679.18

Finding the Fourth Proportional to 31,379.66, 47,080.29 and 19,679.18

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Solution

The fourth proportional to 31,379.66, 47,080.29 and 19,679.18 is: 29,525.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,379.66 : 47,080.29 = 19,679.18 : x
  2. Step 2: Convert to fraction form
    31,379.66/47,080.29 = 19,679.18/x
  3. Step 3: Cross multiply
    31,379.66x = 47,080.29 × 19,679.18
  4. Step 4: Simplify right side
    31,379.66x = 926,501,501.36
  5. Step 5: Solve for x
    x = 926,501,501.36/31,379.66
  6. Step 6: Final answer
    x = 29,525.54

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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.