Home / 30,661.93-42,314.97-18,723.34

Finding the Fourth Proportional to 30,661.93, 42,314.97 and 18,723.34

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Solution

The fourth proportional to 30,661.93, 42,314.97 and 18,723.34 is: 25,839.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.93 : 42,314.97 = 18,723.34 : x
  2. Step 2: Convert to fraction form
    30,661.93/42,314.97 = 18,723.34/x
  3. Step 3: Cross multiply
    30,661.93x = 42,314.97 × 18,723.34
  4. Step 4: Simplify right side
    30,661.93x = 792,277,570.40
  5. Step 5: Solve for x
    x = 792,277,570.40/30,661.93
  6. Step 6: Final answer
    x = 25,839.13

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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.