Home / 31,315.87-43,224.20-19,372.42

Finding the Fourth Proportional to 31,315.87, 43,224.20 and 19,372.42

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Solution

The fourth proportional to 31,315.87, 43,224.20 and 19,372.42 is: 26,739.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.87 : 43,224.20 = 19,372.42 : x
  2. Step 2: Convert to fraction form
    31,315.87/43,224.20 = 19,372.42/x
  3. Step 3: Cross multiply
    31,315.87x = 43,224.20 × 19,372.42
  4. Step 4: Simplify right side
    31,315.87x = 837,357,356.56
  5. Step 5: Solve for x
    x = 837,357,356.56/31,315.87
  6. Step 6: Final answer
    x = 26,739.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.