Home / 21,151.80-31,717.44-6,357.96

Finding the Fourth Proportional to 21,151.80, 31,717.44 and 6,357.96

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Solution

The fourth proportional to 21,151.80, 31,717.44 and 6,357.96 is: 9,533.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.80 : 31,717.44 = 6,357.96 : x
  2. Step 2: Convert to fraction form
    21,151.80/31,717.44 = 6,357.96/x
  3. Step 3: Cross multiply
    21,151.80x = 31,717.44 × 6,357.96
  4. Step 4: Simplify right side
    21,151.80x = 201,658,214.82
  5. Step 5: Solve for x
    x = 201,658,214.82/21,151.80
  6. Step 6: Final answer
    x = 9,533.86

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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.