Home / 39,303.74-54,238.83-21,398.71

Finding the Fourth Proportional to 39,303.74, 54,238.83 and 21,398.71

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Solution

The fourth proportional to 39,303.74, 54,238.83 and 21,398.71 is: 29,530.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,303.74 : 54,238.83 = 21,398.71 : x
  2. Step 2: Convert to fraction form
    39,303.74/54,238.83 = 21,398.71/x
  3. Step 3: Cross multiply
    39,303.74x = 54,238.83 × 21,398.71
  4. Step 4: Simplify right side
    39,303.74x = 1,160,640,993.91
  5. Step 5: Solve for x
    x = 1,160,640,993.91/39,303.74
  6. Step 6: Final answer
    x = 29,530.04

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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.