Home / 39,338.40-54,288.06-21,433.68

Finding the Fourth Proportional to 39,338.40, 54,288.06 and 21,433.68

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Solution

The fourth proportional to 39,338.40, 54,288.06 and 21,433.68 is: 29,579.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,338.40 : 54,288.06 = 21,433.68 : x
  2. Step 2: Convert to fraction form
    39,338.40/54,288.06 = 21,433.68/x
  3. Step 3: Cross multiply
    39,338.40x = 54,288.06 × 21,433.68
  4. Step 4: Simplify right side
    39,338.40x = 1,163,592,905.86
  5. Step 5: Solve for x
    x = 1,163,592,905.86/39,338.40
  6. Step 6: Final answer
    x = 29,579.06

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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.