Home / 39,172.68-54,058.86-21,267.72

Finding the Fourth Proportional to 39,172.68, 54,058.86 and 21,267.72

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Solution

The fourth proportional to 39,172.68, 54,058.86 and 21,267.72 is: 29,349.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,172.68 : 54,058.86 = 21,267.72 : x
  2. Step 2: Convert to fraction form
    39,172.68/54,058.86 = 21,267.72/x
  3. Step 3: Cross multiply
    39,172.68x = 54,058.86 × 21,267.72
  4. Step 4: Simplify right side
    39,172.68x = 1,149,708,698.00
  5. Step 5: Solve for x
    x = 1,149,708,698.00/39,172.68
  6. Step 6: Final answer
    x = 29,349.76

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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.