Home / 19,719.09-29,545.20-11,911.50

Finding the Fourth Proportional to 19,719.09, 29,545.20 and 11,911.50

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Solution

The fourth proportional to 19,719.09, 29,545.20 and 11,911.50 is: 17,847.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.09 : 29,545.20 = 11,911.50 : x
  2. Step 2: Convert to fraction form
    19,719.09/29,545.20 = 11,911.50/x
  3. Step 3: Cross multiply
    19,719.09x = 29,545.20 × 11,911.50
  4. Step 4: Simplify right side
    19,719.09x = 351,927,649.80
  5. Step 5: Solve for x
    x = 351,927,649.80/19,719.09
  6. Step 6: Final answer
    x = 17,847.05

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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.