Home / 39,339.45-54,289.06-21,434.45

Finding the Fourth Proportional to 39,339.45, 54,289.06 and 21,434.45

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Solution

The fourth proportional to 39,339.45, 54,289.06 and 21,434.45 is: 29,579.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.45 : 54,289.06 = 21,434.45 : x
  2. Step 2: Convert to fraction form
    39,339.45/54,289.06 = 21,434.45/x
  3. Step 3: Cross multiply
    39,339.45x = 54,289.06 × 21,434.45
  4. Step 4: Simplify right side
    39,339.45x = 1,163,656,142.12
  5. Step 5: Solve for x
    x = 1,163,656,142.12/39,339.45
  6. Step 6: Final answer
    x = 29,579.88

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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.