Home / 13,011.90-19,517.13-5,612.70

Finding the Fourth Proportional to 13,011.90, 19,517.13 and 5,612.70

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Solution

The fourth proportional to 13,011.90, 19,517.13 and 5,612.70 is: 8,418.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.90 : 19,517.13 = 5,612.70 : x
  2. Step 2: Convert to fraction form
    13,011.90/19,517.13 = 5,612.70/x
  3. Step 3: Cross multiply
    13,011.90x = 19,517.13 × 5,612.70
  4. Step 4: Simplify right side
    13,011.90x = 109,543,795.55
  5. Step 5: Solve for x
    x = 109,543,795.55/13,011.90
  6. Step 6: Final answer
    x = 8,418.74

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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.