Home / 39,203.46-54,101.28-21,298.78

Finding the Fourth Proportional to 39,203.46, 54,101.28 and 21,298.78

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Solution

The fourth proportional to 39,203.46, 54,101.28 and 21,298.78 is: 29,392.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,203.46 : 54,101.28 = 21,298.78 : x
  2. Step 2: Convert to fraction form
    39,203.46/54,101.28 = 21,298.78/x
  3. Step 3: Cross multiply
    39,203.46x = 54,101.28 × 21,298.78
  4. Step 4: Simplify right side
    39,203.46x = 1,152,291,407.94
  5. Step 5: Solve for x
    x = 1,152,291,407.94/39,203.46
  6. Step 6: Final answer
    x = 29,392.59

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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.