Home / 21,162.96-31,589.91-19,621.13

Finding the Fourth Proportional to 21,162.96, 31,589.91 and 19,621.13

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Solution

The fourth proportional to 21,162.96, 31,589.91 and 19,621.13 is: 29,288.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.96 : 31,589.91 = 19,621.13 : x
  2. Step 2: Convert to fraction form
    21,162.96/31,589.91 = 19,621.13/x
  3. Step 3: Cross multiply
    21,162.96x = 31,589.91 × 19,621.13
  4. Step 4: Simplify right side
    21,162.96x = 619,829,572.85
  5. Step 5: Solve for x
    x = 619,829,572.85/21,162.96
  6. Step 6: Final answer
    x = 29,288.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.