Home / 13,446.55-18,556.20-7,478.77

Finding the Fourth Proportional to 13,446.55, 18,556.20 and 7,478.77

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Solution

The fourth proportional to 13,446.55, 18,556.20 and 7,478.77 is: 10,320.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.55 : 18,556.20 = 7,478.77 : x
  2. Step 2: Convert to fraction form
    13,446.55/18,556.20 = 7,478.77/x
  3. Step 3: Cross multiply
    13,446.55x = 18,556.20 × 7,478.77
  4. Step 4: Simplify right side
    13,446.55x = 138,777,551.87
  5. Step 5: Solve for x
    x = 138,777,551.87/13,446.55
  6. Step 6: Final answer
    x = 10,320.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.