Home / 39,518.28-54,534.64-21,612.82

Finding the Fourth Proportional to 39,518.28, 54,534.64 and 21,612.82

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Solution

The fourth proportional to 39,518.28, 54,534.64 and 21,612.82 is: 29,825.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,518.28 : 54,534.64 = 21,612.82 : x
  2. Step 2: Convert to fraction form
    39,518.28/54,534.64 = 21,612.82/x
  3. Step 3: Cross multiply
    39,518.28x = 54,534.64 × 21,612.82
  4. Step 4: Simplify right side
    39,518.28x = 1,178,647,358.08
  5. Step 5: Solve for x
    x = 1,178,647,358.08/39,518.28
  6. Step 6: Final answer
    x = 29,825.37

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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.