Home / 30,118.30-41,570.16-20,047.18

Finding the Fourth Proportional to 30,118.30, 41,570.16 and 20,047.18

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Solution

The fourth proportional to 30,118.30, 41,570.16 and 20,047.18 is: 27,669.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,118.30 : 41,570.16 = 20,047.18 : x
  2. Step 2: Convert to fraction form
    30,118.30/41,570.16 = 20,047.18/x
  3. Step 3: Cross multiply
    30,118.30x = 41,570.16 × 20,047.18
  4. Step 4: Simplify right side
    30,118.30x = 833,364,480.15
  5. Step 5: Solve for x
    x = 833,364,480.15/30,118.30
  6. Step 6: Final answer
    x = 27,669.71

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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.