Home / 39,228.59-54,135.77-21,323.58

Finding the Fourth Proportional to 39,228.59, 54,135.77 and 21,323.58

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Solution

The fourth proportional to 39,228.59, 54,135.77 and 21,323.58 is: 29,426.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,228.59 : 54,135.77 = 21,323.58 : x
  2. Step 2: Convert to fraction form
    39,228.59/54,135.77 = 21,323.58/x
  3. Step 3: Cross multiply
    39,228.59x = 54,135.77 × 21,323.58
  4. Step 4: Simplify right side
    39,228.59x = 1,154,368,315.84
  5. Step 5: Solve for x
    x = 1,154,368,315.84/39,228.59
  6. Step 6: Final answer
    x = 29,426.71

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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.