Home / 13,678.52-20,503.46-7,748

Finding the Fourth Proportional to 13,678.52, 20,503.46 and 7,748

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Solution

The fourth proportional to 13,678.52, 20,503.46 and 7,748 is: 11,613.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.52 : 20,503.46 = 7,748 : x
  2. Step 2: Convert to fraction form
    13,678.52/20,503.46 = 7,748/x
  3. Step 3: Cross multiply
    13,678.52x = 20,503.46 × 7,748
  4. Step 4: Simplify right side
    13,678.52x = 158,860,808.08
  5. Step 5: Solve for x
    x = 158,860,808.08/13,678.52
  6. Step 6: Final answer
    x = 11,613.89

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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.