Home / 30,111.40-41,568.42-20,045.80

Finding the Fourth Proportional to 30,111.40, 41,568.42 and 20,045.80

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Solution

The fourth proportional to 30,111.40, 41,568.42 and 20,045.80 is: 27,672.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,111.40 : 41,568.42 = 20,045.80 : x
  2. Step 2: Convert to fraction form
    30,111.40/41,568.42 = 20,045.80/x
  3. Step 3: Cross multiply
    30,111.40x = 41,568.42 × 20,045.80
  4. Step 4: Simplify right side
    30,111.40x = 833,272,233.64
  5. Step 5: Solve for x
    x = 833,272,233.64/30,111.40
  6. Step 6: Final answer
    x = 27,672.98

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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.