Home / 19,670.61-29,511.39-8,578.28

Finding the Fourth Proportional to 19,670.61, 29,511.39 and 8,578.28

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Solution

The fourth proportional to 19,670.61, 29,511.39 and 8,578.28 is: 12,869.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.61 : 29,511.39 = 8,578.28 : x
  2. Step 2: Convert to fraction form
    19,670.61/29,511.39 = 8,578.28/x
  3. Step 3: Cross multiply
    19,670.61x = 29,511.39 × 8,578.28
  4. Step 4: Simplify right side
    19,670.61x = 253,156,966.61
  5. Step 5: Solve for x
    x = 253,156,966.61/19,670.61
  6. Step 6: Final answer
    x = 12,869.81

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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.