Home / 13,215.09-19,829.10-5,818.62

Finding the Fourth Proportional to 13,215.09, 19,829.10 and 5,818.62

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Solution

The fourth proportional to 13,215.09, 19,829.10 and 5,818.62 is: 8,730.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.09 : 19,829.10 = 5,818.62 : x
  2. Step 2: Convert to fraction form
    13,215.09/19,829.10 = 5,818.62/x
  3. Step 3: Cross multiply
    13,215.09x = 19,829.10 × 5,818.62
  4. Step 4: Simplify right side
    13,215.09x = 115,377,997.84
  5. Step 5: Solve for x
    x = 115,377,997.84/13,215.09
  6. Step 6: Final answer
    x = 8,730.78

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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.