Home / 13,447.85-18,556.61-7,478.55

Finding the Fourth Proportional to 13,447.85, 18,556.61 and 7,478.55

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Solution

The fourth proportional to 13,447.85, 18,556.61 and 7,478.55 is: 10,319.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.85 : 18,556.61 = 7,478.55 : x
  2. Step 2: Convert to fraction form
    13,447.85/18,556.61 = 7,478.55/x
  3. Step 3: Cross multiply
    13,447.85x = 18,556.61 × 7,478.55
  4. Step 4: Simplify right side
    13,447.85x = 138,776,498.32
  5. Step 5: Solve for x
    x = 138,776,498.32/13,447.85
  6. Step 6: Final answer
    x = 10,319.61

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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.