Home / 39,897.32-55,058.48-21,991.94

Finding the Fourth Proportional to 39,897.32, 55,058.48 and 21,991.94

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Solution

The fourth proportional to 39,897.32, 55,058.48 and 21,991.94 is: 30,348.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,897.32 : 55,058.48 = 21,991.94 : x
  2. Step 2: Convert to fraction form
    39,897.32/55,058.48 = 21,991.94/x
  3. Step 3: Cross multiply
    39,897.32x = 55,058.48 × 21,991.94
  4. Step 4: Simplify right side
    39,897.32x = 1,210,842,403.40
  5. Step 5: Solve for x
    x = 1,210,842,403.40/39,897.32
  6. Step 6: Final answer
    x = 30,348.97

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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.