Home / 38,990.88-53,744.22-30,477.96

Finding the Fourth Proportional to 38,990.88, 53,744.22 and 30,477.96

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Solution

The fourth proportional to 38,990.88, 53,744.22 and 30,477.96 is: 42,010.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.88 : 53,744.22 = 30,477.96 : x
  2. Step 2: Convert to fraction form
    38,990.88/53,744.22 = 30,477.96/x
  3. Step 3: Cross multiply
    38,990.88x = 53,744.22 × 30,477.96
  4. Step 4: Simplify right side
    38,990.88x = 1,638,014,187.39
  5. Step 5: Solve for x
    x = 1,638,014,187.39/38,990.88
  6. Step 6: Final answer
    x = 42,010.19

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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.