Home / 12,821.36-19,225.18-6,578.80

Finding the Fourth Proportional to 12,821.36, 19,225.18 and 6,578.80

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Solution

The fourth proportional to 12,821.36, 19,225.18 and 6,578.80 is: 9,864.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.36 : 19,225.18 = 6,578.80 : x
  2. Step 2: Convert to fraction form
    12,821.36/19,225.18 = 6,578.80/x
  3. Step 3: Cross multiply
    12,821.36x = 19,225.18 × 6,578.80
  4. Step 4: Simplify right side
    12,821.36x = 126,478,614.18
  5. Step 5: Solve for x
    x = 126,478,614.18/12,821.36
  6. Step 6: Final answer
    x = 9,864.68

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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.