Home / 29,138.81-43,708.20-19,275.78

Finding the Fourth Proportional to 29,138.81, 43,708.20 and 19,275.78

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Solution

The fourth proportional to 29,138.81, 43,708.20 and 19,275.78 is: 28,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.81 : 43,708.20 = 19,275.78 : x
  2. Step 2: Convert to fraction form
    29,138.81/43,708.20 = 19,275.78/x
  3. Step 3: Cross multiply
    29,138.81x = 43,708.20 × 19,275.78
  4. Step 4: Simplify right side
    29,138.81x = 842,509,647.40
  5. Step 5: Solve for x
    x = 842,509,647.40/29,138.81
  6. Step 6: Final answer
    x = 28,913.66

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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.