Home / 39,315.24-54,255.72-21,410.28

Finding the Fourth Proportional to 39,315.24, 54,255.72 and 21,410.28

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Solution

The fourth proportional to 39,315.24, 54,255.72 and 21,410.28 is: 29,546.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,315.24 : 54,255.72 = 21,410.28 : x
  2. Step 2: Convert to fraction form
    39,315.24/54,255.72 = 21,410.28/x
  3. Step 3: Cross multiply
    39,315.24x = 54,255.72 × 21,410.28
  4. Step 4: Simplify right side
    39,315.24x = 1,161,630,156.80
  5. Step 5: Solve for x
    x = 1,161,630,156.80/39,315.24
  6. Step 6: Final answer
    x = 29,546.56

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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.