Home / 31,429.62-43,378.74-19,490.22

Finding the Fourth Proportional to 31,429.62, 43,378.74 and 19,490.22

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Solution

The fourth proportional to 31,429.62, 43,378.74 and 19,490.22 is: 26,900.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,429.62 : 43,378.74 = 19,490.22 : x
  2. Step 2: Convert to fraction form
    31,429.62/43,378.74 = 19,490.22/x
  3. Step 3: Cross multiply
    31,429.62x = 43,378.74 × 19,490.22
  4. Step 4: Simplify right side
    31,429.62x = 845,461,185.92
  5. Step 5: Solve for x
    x = 845,461,185.92/31,429.62
  6. Step 6: Final answer
    x = 26,900.14

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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.