Home / 13,909.79-20,860.55-7,332.39

Finding the Fourth Proportional to 13,909.79, 20,860.55 and 7,332.39

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Solution

The fourth proportional to 13,909.79, 20,860.55 and 7,332.39 is: 10,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.79 : 20,860.55 = 7,332.39 : x
  2. Step 2: Convert to fraction form
    13,909.79/20,860.55 = 7,332.39/x
  3. Step 3: Cross multiply
    13,909.79x = 20,860.55 × 7,332.39
  4. Step 4: Simplify right side
    13,909.79x = 152,957,651.55
  5. Step 5: Solve for x
    x = 152,957,651.55/13,909.79
  6. Step 6: Final answer
    x = 10,996.41

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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.