Home / 39,897.09-55,058.13-21,747.72

Finding the Fourth Proportional to 39,897.09, 55,058.13 and 21,747.72

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Solution

The fourth proportional to 39,897.09, 55,058.13 and 21,747.72 is: 30,011.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,897.09 : 55,058.13 = 21,747.72 : x
  2. Step 2: Convert to fraction form
    39,897.09/55,058.13 = 21,747.72/x
  3. Step 3: Cross multiply
    39,897.09x = 55,058.13 × 21,747.72
  4. Step 4: Simplify right side
    39,897.09x = 1,197,388,794.96
  5. Step 5: Solve for x
    x = 1,197,388,794.96/39,897.09
  6. Step 6: Final answer
    x = 30,011.93

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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.