Home / 31,168.78-43,011.21-19,232.98

Finding the Fourth Proportional to 31,168.78, 43,011.21 and 19,232.98

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Solution

The fourth proportional to 31,168.78, 43,011.21 and 19,232.98 is: 26,540.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,168.78 : 43,011.21 = 19,232.98 : x
  2. Step 2: Convert to fraction form
    31,168.78/43,011.21 = 19,232.98/x
  3. Step 3: Cross multiply
    31,168.78x = 43,011.21 × 19,232.98
  4. Step 4: Simplify right side
    31,168.78x = 827,233,741.71
  5. Step 5: Solve for x
    x = 827,233,741.71/31,168.78
  6. Step 6: Final answer
    x = 26,540.46

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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.