Home / 31,058.39-42,849.66-20,309.56

Finding the Fourth Proportional to 31,058.39, 42,849.66 and 20,309.56

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Solution

The fourth proportional to 31,058.39, 42,849.66 and 20,309.56 is: 28,020.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,058.39 : 42,849.66 = 20,309.56 : x
  2. Step 2: Convert to fraction form
    31,058.39/42,849.66 = 20,309.56/x
  3. Step 3: Cross multiply
    31,058.39x = 42,849.66 × 20,309.56
  4. Step 4: Simplify right side
    31,058.39x = 870,257,526.50
  5. Step 5: Solve for x
    x = 870,257,526.50/31,058.39
  6. Step 6: Final answer
    x = 28,020.05

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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.