Home / 39,432.99-54,418.35-21,528.75

Finding the Fourth Proportional to 39,432.99, 54,418.35 and 21,528.75

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Solution

The fourth proportional to 39,432.99, 54,418.35 and 21,528.75 is: 29,710.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,432.99 : 54,418.35 = 21,528.75 : x
  2. Step 2: Convert to fraction form
    39,432.99/54,418.35 = 21,528.75/x
  3. Step 3: Cross multiply
    39,432.99x = 54,418.35 × 21,528.75
  4. Step 4: Simplify right side
    39,432.99x = 1,171,558,944.92
  5. Step 5: Solve for x
    x = 1,171,558,944.92/39,432.99
  6. Step 6: Final answer
    x = 29,710.12

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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.