Home / 39,216.51-54,118.71-21,311.58

Finding the Fourth Proportional to 39,216.51, 54,118.71 and 21,311.58

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Solution

The fourth proportional to 39,216.51, 54,118.71 and 21,311.58 is: 29,409.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216.51 : 54,118.71 = 21,311.58 : x
  2. Step 2: Convert to fraction form
    39,216.51/54,118.71 = 21,311.58/x
  3. Step 3: Cross multiply
    39,216.51x = 54,118.71 × 21,311.58
  4. Step 4: Simplify right side
    39,216.51x = 1,153,355,217.66
  5. Step 5: Solve for x
    x = 1,153,355,217.66/39,216.51
  6. Step 6: Final answer
    x = 29,409.94

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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.