Home / 19,515.10-26,942.44-12,812.48

Finding the Fourth Proportional to 19,515.10, 26,942.44 and 12,812.48

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Solution

The fourth proportional to 19,515.10, 26,942.44 and 12,812.48 is: 17,688.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,515.10 : 26,942.44 = 12,812.48 : x
  2. Step 2: Convert to fraction form
    19,515.10/26,942.44 = 12,812.48/x
  3. Step 3: Cross multiply
    19,515.10x = 26,942.44 × 12,812.48
  4. Step 4: Simplify right side
    19,515.10x = 345,199,306.91
  5. Step 5: Solve for x
    x = 345,199,306.91/19,515.10
  6. Step 6: Final answer
    x = 17,688.83

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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.