Home / 13,109.10-19,625.00-8,658.60

Finding the Fourth Proportional to 13,109.10, 19,625.00 and 8,658.60

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Solution

The fourth proportional to 13,109.10, 19,625.00 and 8,658.60 is: 12,962.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.10 : 19,625.00 = 8,658.60 : x
  2. Step 2: Convert to fraction form
    13,109.10/19,625.00 = 8,658.60/x
  3. Step 3: Cross multiply
    13,109.10x = 19,625.00 × 8,658.60
  4. Step 4: Simplify right side
    13,109.10x = 169,924,981.71
  5. Step 5: Solve for x
    x = 169,924,981.71/13,109.10
  6. Step 6: Final answer
    x = 12,962.37

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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.