Home / 31,240.78-46,861.23-12,772.78

Finding the Fourth Proportional to 31,240.78, 46,861.23 and 12,772.78

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Solution

The fourth proportional to 31,240.78, 46,861.23 and 12,772.78 is: 19,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,240.78 : 46,861.23 = 12,772.78 : x
  2. Step 2: Convert to fraction form
    31,240.78/46,861.23 = 12,772.78/x
  3. Step 3: Cross multiply
    31,240.78x = 46,861.23 × 12,772.78
  4. Step 4: Simplify right side
    31,240.78x = 598,548,181.32
  5. Step 5: Solve for x
    x = 598,548,181.32/31,240.78
  6. Step 6: Final answer
    x = 19,159.19

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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.