Home / 38,131.61-52,616.61-21,999.51

Finding the Fourth Proportional to 38,131.61, 52,616.61 and 21,999.51

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Solution

The fourth proportional to 38,131.61, 52,616.61 and 21,999.51 is: 30,356.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,131.61 : 52,616.61 = 21,999.51 : x
  2. Step 2: Convert to fraction form
    38,131.61/52,616.61 = 21,999.51/x
  3. Step 3: Cross multiply
    38,131.61x = 52,616.61 × 21,999.51
  4. Step 4: Simplify right side
    38,131.61x = 1,157,539,637.86
  5. Step 5: Solve for x
    x = 1,157,539,637.86/38,131.61
  6. Step 6: Final answer
    x = 30,356.44

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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.