Home / 13,009.59-19,515.30-5,218.41

Finding the Fourth Proportional to 13,009.59, 19,515.30 and 5,218.41

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Solution

The fourth proportional to 13,009.59, 19,515.30 and 5,218.41 is: 7,827.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,009.59 : 19,515.30 = 5,218.41 : x
  2. Step 2: Convert to fraction form
    13,009.59/19,515.30 = 5,218.41/x
  3. Step 3: Cross multiply
    13,009.59x = 19,515.30 × 5,218.41
  4. Step 4: Simplify right side
    13,009.59x = 101,838,836.67
  5. Step 5: Solve for x
    x = 101,838,836.67/13,009.59
  6. Step 6: Final answer
    x = 7,827.98

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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.