Home / 13,115.10-19,671.02-5,316.42

Finding the Fourth Proportional to 13,115.10, 19,671.02 and 5,316.42

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Solution

The fourth proportional to 13,115.10, 19,671.02 and 5,316.42 is: 7,973.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.10 : 19,671.02 = 5,316.42 : x
  2. Step 2: Convert to fraction form
    13,115.10/19,671.02 = 5,316.42/x
  3. Step 3: Cross multiply
    13,115.10x = 19,671.02 × 5,316.42
  4. Step 4: Simplify right side
    13,115.10x = 104,579,404.15
  5. Step 5: Solve for x
    x = 104,579,404.15/13,115.10
  6. Step 6: Final answer
    x = 7,973.97

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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.