Home / 39,339.86-54,288.32-21,434.99

Finding the Fourth Proportional to 39,339.86, 54,288.32 and 21,434.99

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Solution

The fourth proportional to 39,339.86, 54,288.32 and 21,434.99 is: 29,579.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.86 : 54,288.32 = 21,434.99 : x
  2. Step 2: Convert to fraction form
    39,339.86/54,288.32 = 21,434.99/x
  3. Step 3: Cross multiply
    39,339.86x = 54,288.32 × 21,434.99
  4. Step 4: Simplify right side
    39,339.86x = 1,163,669,217.70
  5. Step 5: Solve for x
    x = 1,163,669,217.70/39,339.86
  6. Step 6: Final answer
    x = 29,579.91

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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.