Home / 13,215.48-19,809.63-5,818.56

Finding the Fourth Proportional to 13,215.48, 19,809.63 and 5,818.56

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Solution

The fourth proportional to 13,215.48, 19,809.63 and 5,818.56 is: 8,721.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.48 : 19,809.63 = 5,818.56 : x
  2. Step 2: Convert to fraction form
    13,215.48/19,809.63 = 5,818.56/x
  3. Step 3: Cross multiply
    13,215.48x = 19,809.63 × 5,818.56
  4. Step 4: Simplify right side
    13,215.48x = 115,263,520.73
  5. Step 5: Solve for x
    x = 115,263,520.73/13,215.48
  6. Step 6: Final answer
    x = 8,721.86

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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.