Home / 22,161.40-30,581.75-12,089.66

Finding the Fourth Proportional to 22,161.40, 30,581.75 and 12,089.66

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Solution

The fourth proportional to 22,161.40, 30,581.75 and 12,089.66 is: 16,683.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.40 : 30,581.75 = 12,089.66 : x
  2. Step 2: Convert to fraction form
    22,161.40/30,581.75 = 12,089.66/x
  3. Step 3: Cross multiply
    22,161.40x = 30,581.75 × 12,089.66
  4. Step 4: Simplify right side
    22,161.40x = 369,722,837.02
  5. Step 5: Solve for x
    x = 369,722,837.02/22,161.40
  6. Step 6: Final answer
    x = 16,683.19

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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.