Home / 39,339.59-54,287.94-21,434.74

Finding the Fourth Proportional to 39,339.59, 54,287.94 and 21,434.74

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Solution

The fourth proportional to 39,339.59, 54,287.94 and 21,434.74 is: 29,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.59 : 54,287.94 = 21,434.74 : x
  2. Step 2: Convert to fraction form
    39,339.59/54,287.94 = 21,434.74/x
  3. Step 3: Cross multiply
    39,339.59x = 54,287.94 × 21,434.74
  4. Step 4: Simplify right side
    39,339.59x = 1,163,647,823.70
  5. Step 5: Solve for x
    x = 1,163,647,823.70/39,339.59
  6. Step 6: Final answer
    x = 29,579.57

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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.