Home / 39,897.72-55,058.99-21,748.35

Finding the Fourth Proportional to 39,897.72, 55,058.99 and 21,748.35

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Solution

The fourth proportional to 39,897.72, 55,058.99 and 21,748.35 is: 30,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,897.72 : 55,058.99 = 21,748.35 : x
  2. Step 2: Convert to fraction form
    39,897.72/55,058.99 = 21,748.35/x
  3. Step 3: Cross multiply
    39,897.72x = 55,058.99 × 21,748.35
  4. Step 4: Simplify right side
    39,897.72x = 1,197,441,964.24
  5. Step 5: Solve for x
    x = 1,197,441,964.24/39,897.72
  6. Step 6: Final answer
    x = 30,012.80

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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.