Home / 39,226.81-54,133.10-21,321.78

Finding the Fourth Proportional to 39,226.81, 54,133.10 and 21,321.78

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Solution

The fourth proportional to 39,226.81, 54,133.10 and 21,321.78 is: 29,424.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,226.81 : 54,133.10 = 21,321.78 : x
  2. Step 2: Convert to fraction form
    39,226.81/54,133.10 = 21,321.78/x
  3. Step 3: Cross multiply
    39,226.81x = 54,133.10 × 21,321.78
  4. Step 4: Simplify right side
    39,226.81x = 1,154,214,048.92
  5. Step 5: Solve for x
    x = 1,154,214,048.92/39,226.81
  6. Step 6: Final answer
    x = 29,424.11

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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.