Home / 40,085.13-60,130.83-13,431.21

Finding the Fourth Proportional to 40,085.13, 60,130.83 and 13,431.21

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Solution

The fourth proportional to 40,085.13, 60,130.83 and 13,431.21 is: 20,147.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,085.13 : 60,130.83 = 13,431.21 : x
  2. Step 2: Convert to fraction form
    40,085.13/60,130.83 = 13,431.21/x
  3. Step 3: Cross multiply
    40,085.13x = 60,130.83 × 13,431.21
  4. Step 4: Simplify right side
    40,085.13x = 807,629,805.20
  5. Step 5: Solve for x
    x = 807,629,805.20/40,085.13
  6. Step 6: Final answer
    x = 20,147.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.