Home / 21,095.88-31,651.42-9,861.24

Finding the Fourth Proportional to 21,095.88, 31,651.42 and 9,861.24

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Solution

The fourth proportional to 21,095.88, 31,651.42 and 9,861.24 is: 14,795.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.88 : 31,651.42 = 9,861.24 : x
  2. Step 2: Convert to fraction form
    21,095.88/31,651.42 = 9,861.24/x
  3. Step 3: Cross multiply
    21,095.88x = 31,651.42 × 9,861.24
  4. Step 4: Simplify right side
    21,095.88x = 312,122,248.96
  5. Step 5: Solve for x
    x = 312,122,248.96/21,095.88
  6. Step 6: Final answer
    x = 14,795.41

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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.