Home / 31,035.24-42,817.14-18,940.32

Finding the Fourth Proportional to 31,035.24, 42,817.14 and 18,940.32

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Solution

The fourth proportional to 31,035.24, 42,817.14 and 18,940.32 is: 26,130.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,035.24 : 42,817.14 = 18,940.32 : x
  2. Step 2: Convert to fraction form
    31,035.24/42,817.14 = 18,940.32/x
  3. Step 3: Cross multiply
    31,035.24x = 42,817.14 × 18,940.32
  4. Step 4: Simplify right side
    31,035.24x = 810,970,333.08
  5. Step 5: Solve for x
    x = 810,970,333.08/31,035.24
  6. Step 6: Final answer
    x = 26,130.63

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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.