Home / 39,228.65-54,135.90-21,323.70

Finding the Fourth Proportional to 39,228.65, 54,135.90 and 21,323.70

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Solution

The fourth proportional to 39,228.65, 54,135.90 and 21,323.70 is: 29,426.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,228.65 : 54,135.90 = 21,323.70 : x
  2. Step 2: Convert to fraction form
    39,228.65/54,135.90 = 21,323.70/x
  3. Step 3: Cross multiply
    39,228.65x = 54,135.90 × 21,323.70
  4. Step 4: Simplify right side
    39,228.65x = 1,154,377,690.83
  5. Step 5: Solve for x
    x = 1,154,377,690.83/39,228.65
  6. Step 6: Final answer
    x = 29,426.91

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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.