Home / 39,339.35-54,288.70-21,434.65

Finding the Fourth Proportional to 39,339.35, 54,288.70 and 21,434.65

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Solution

The fourth proportional to 39,339.35, 54,288.70 and 21,434.65 is: 29,580.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.35 : 54,288.70 = 21,434.65 : x
  2. Step 2: Convert to fraction form
    39,339.35/54,288.70 = 21,434.65/x
  3. Step 3: Cross multiply
    39,339.35x = 54,288.70 × 21,434.65
  4. Step 4: Simplify right side
    39,339.35x = 1,163,659,566.29
  5. Step 5: Solve for x
    x = 1,163,659,566.29/39,339.35
  6. Step 6: Final answer
    x = 29,580.04

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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.