Home / 22,782.10-31,439.21-12,710.55

Finding the Fourth Proportional to 22,782.10, 31,439.21 and 12,710.55

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Solution

The fourth proportional to 22,782.10, 31,439.21 and 12,710.55 is: 17,540.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,782.10 : 31,439.21 = 12,710.55 : x
  2. Step 2: Convert to fraction form
    22,782.10/31,439.21 = 12,710.55/x
  3. Step 3: Cross multiply
    22,782.10x = 31,439.21 × 12,710.55
  4. Step 4: Simplify right side
    22,782.10x = 399,609,650.67
  5. Step 5: Solve for x
    x = 399,609,650.67/22,782.10
  6. Step 6: Final answer
    x = 17,540.51

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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.