Home / 13,446.76-18,556.26-7,478.30

Finding the Fourth Proportional to 13,446.76, 18,556.26 and 7,478.30

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Solution

The fourth proportional to 13,446.76, 18,556.26 and 7,478.30 is: 10,319.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.76 : 18,556.26 = 7,478.30 : x
  2. Step 2: Convert to fraction form
    13,446.76/18,556.26 = 7,478.30/x
  3. Step 3: Cross multiply
    13,446.76x = 18,556.26 × 7,478.30
  4. Step 4: Simplify right side
    13,446.76x = 138,769,307.20
  5. Step 5: Solve for x
    x = 138,769,307.20/13,446.76
  6. Step 6: Final answer
    x = 10,319.91

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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.