Home / 39,031.35-53,863.11-21,126.66

Finding the Fourth Proportional to 39,031.35, 53,863.11 and 21,126.66

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Solution

The fourth proportional to 39,031.35, 53,863.11 and 21,126.66 is: 29,154.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,031.35 : 53,863.11 = 21,126.66 : x
  2. Step 2: Convert to fraction form
    39,031.35/53,863.11 = 21,126.66/x
  3. Step 3: Cross multiply
    39,031.35x = 53,863.11 × 21,126.66
  4. Step 4: Simplify right side
    39,031.35x = 1,137,947,611.51
  5. Step 5: Solve for x
    x = 1,137,947,611.51/39,031.35
  6. Step 6: Final answer
    x = 29,154.71

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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.