Home / 39,230.61-54,138.30-21,325.56

Finding the Fourth Proportional to 39,230.61, 54,138.30 and 21,325.56

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Solution

The fourth proportional to 39,230.61, 54,138.30 and 21,325.56 is: 29,429.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,230.61 : 54,138.30 = 21,325.56 : x
  2. Step 2: Convert to fraction form
    39,230.61/54,138.30 = 21,325.56/x
  3. Step 3: Cross multiply
    39,230.61x = 54,138.30 × 21,325.56
  4. Step 4: Simplify right side
    39,230.61x = 1,154,529,564.95
  5. Step 5: Solve for x
    x = 1,154,529,564.95/39,230.61
  6. Step 6: Final answer
    x = 29,429.30

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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.