Home / 13,458.24-18,556.48-9,211.36

Finding the Fourth Proportional to 13,458.24, 18,556.48 and 9,211.36

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Solution

The fourth proportional to 13,458.24, 18,556.48 and 9,211.36 is: 12,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.24 : 18,556.48 = 9,211.36 : x
  2. Step 2: Convert to fraction form
    13,458.24/18,556.48 = 9,211.36/x
  3. Step 3: Cross multiply
    13,458.24x = 18,556.48 × 9,211.36
  4. Step 4: Simplify right side
    13,458.24x = 170,930,417.61
  5. Step 5: Solve for x
    x = 170,930,417.61/13,458.24
  6. Step 6: Final answer
    x = 12,700.80

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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.