Home / 39,230.81-54,138.62-21,325.79

Finding the Fourth Proportional to 39,230.81, 54,138.62 and 21,325.79

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Solution

The fourth proportional to 39,230.81, 54,138.62 and 21,325.79 is: 29,429.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,230.81 : 54,138.62 = 21,325.79 : x
  2. Step 2: Convert to fraction form
    39,230.81/54,138.62 = 21,325.79/x
  3. Step 3: Cross multiply
    39,230.81x = 54,138.62 × 21,325.79
  4. Step 4: Simplify right side
    39,230.81x = 1,154,548,841.01
  5. Step 5: Solve for x
    x = 1,154,548,841.01/39,230.81
  6. Step 6: Final answer
    x = 29,429.65

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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.