Home / 39,429.32-54,409.38-21,523.28

Finding the Fourth Proportional to 39,429.32, 54,409.38 and 21,523.28

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Solution

The fourth proportional to 39,429.32, 54,409.38 and 21,523.28 is: 29,700.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,429.32 : 54,409.38 = 21,523.28 : x
  2. Step 2: Convert to fraction form
    39,429.32/54,409.38 = 21,523.28/x
  3. Step 3: Cross multiply
    39,429.32x = 54,409.38 × 21,523.28
  4. Step 4: Simplify right side
    39,429.32x = 1,171,068,320.37
  5. Step 5: Solve for x
    x = 1,171,068,320.37/39,429.32
  6. Step 6: Final answer
    x = 29,700.44

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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.