Home / 22,190.08-30,624.16-12,761.68

Finding the Fourth Proportional to 22,190.08, 30,624.16 and 12,761.68

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Solution

The fourth proportional to 22,190.08, 30,624.16 and 12,761.68 is: 17,612.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,190.08 : 30,624.16 = 12,761.68 : x
  2. Step 2: Convert to fraction form
    22,190.08/30,624.16 = 12,761.68/x
  3. Step 3: Cross multiply
    22,190.08x = 30,624.16 × 12,761.68
  4. Step 4: Simplify right side
    22,190.08x = 390,815,730.19
  5. Step 5: Solve for x
    x = 390,815,730.19/22,190.08
  6. Step 6: Final answer
    x = 17,612.18

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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.