Home / 13,447.88-18,556.65-7,478.59

Finding the Fourth Proportional to 13,447.88, 18,556.65 and 7,478.59

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Solution

The fourth proportional to 13,447.88, 18,556.65 and 7,478.59 is: 10,319.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.88 : 18,556.65 = 7,478.59 : x
  2. Step 2: Convert to fraction form
    13,447.88/18,556.65 = 7,478.59/x
  3. Step 3: Cross multiply
    13,447.88x = 18,556.65 × 7,478.59
  4. Step 4: Simplify right side
    13,447.88x = 138,777,484.34
  5. Step 5: Solve for x
    x = 138,777,484.34/13,447.88
  6. Step 6: Final answer
    x = 10,319.66

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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.