Home / 12,812.16-19,220.64-4,049.28

Finding the Fourth Proportional to 12,812.16, 19,220.64 and 4,049.28

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Solution

The fourth proportional to 12,812.16, 19,220.64 and 4,049.28 is: 6,074.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.16 : 19,220.64 = 4,049.28 : x
  2. Step 2: Convert to fraction form
    12,812.16/19,220.64 = 4,049.28/x
  3. Step 3: Cross multiply
    12,812.16x = 19,220.64 × 4,049.28
  4. Step 4: Simplify right side
    12,812.16x = 77,829,753.14
  5. Step 5: Solve for x
    x = 77,829,753.14/12,812.16
  6. Step 6: Final answer
    x = 6,074.68

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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.