Home / 19,919.17-27,511.20-13,535.10

Finding the Fourth Proportional to 19,919.17, 27,511.20 and 13,535.10

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Solution

The fourth proportional to 19,919.17, 27,511.20 and 13,535.10 is: 18,693.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.17 : 27,511.20 = 13,535.10 : x
  2. Step 2: Convert to fraction form
    19,919.17/27,511.20 = 13,535.10/x
  3. Step 3: Cross multiply
    19,919.17x = 27,511.20 × 13,535.10
  4. Step 4: Simplify right side
    19,919.17x = 372,366,705.56
  5. Step 5: Solve for x
    x = 372,366,705.56/19,919.17
  6. Step 6: Final answer
    x = 18,693.89

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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.