Home / 31,181.40-46,772.10-10,121.40

Finding the Fourth Proportional to 31,181.40, 46,772.10 and 10,121.40

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Solution

The fourth proportional to 31,181.40, 46,772.10 and 10,121.40 is: 15,182.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,181.40 : 46,772.10 = 10,121.40 : x
  2. Step 2: Convert to fraction form
    31,181.40/46,772.10 = 10,121.40/x
  3. Step 3: Cross multiply
    31,181.40x = 46,772.10 × 10,121.40
  4. Step 4: Simplify right side
    31,181.40x = 473,399,132.94
  5. Step 5: Solve for x
    x = 473,399,132.94/31,181.40
  6. Step 6: Final answer
    x = 15,182.10

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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.