Home / 21,158.42-31,739.73-7,834.97

Finding the Fourth Proportional to 21,158.42, 31,739.73 and 7,834.97

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Solution

The fourth proportional to 21,158.42, 31,739.73 and 7,834.97 is: 11,753.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.42 : 31,739.73 = 7,834.97 : x
  2. Step 2: Convert to fraction form
    21,158.42/31,739.73 = 7,834.97/x
  3. Step 3: Cross multiply
    21,158.42x = 31,739.73 × 7,834.97
  4. Step 4: Simplify right side
    21,158.42x = 248,679,832.36
  5. Step 5: Solve for x
    x = 248,679,832.36/21,158.42
  6. Step 6: Final answer
    x = 11,753.23

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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.