Home / 21,317.18-31,979.55-6,525.77

Finding the Fourth Proportional to 21,317.18, 31,979.55 and 6,525.77

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Solution

The fourth proportional to 21,317.18, 31,979.55 and 6,525.77 is: 9,789.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.18 : 31,979.55 = 6,525.77 : x
  2. Step 2: Convert to fraction form
    21,317.18/31,979.55 = 6,525.77/x
  3. Step 3: Cross multiply
    21,317.18x = 31,979.55 × 6,525.77
  4. Step 4: Simplify right side
    21,317.18x = 208,691,188.00
  5. Step 5: Solve for x
    x = 208,691,188.00/21,317.18
  6. Step 6: Final answer
    x = 9,789.81

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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.