Home / 12,556.40-17,327.72-6,890.98

Finding the Fourth Proportional to 12,556.40, 17,327.72 and 6,890.98

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Solution

The fourth proportional to 12,556.40, 17,327.72 and 6,890.98 is: 9,509.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.40 : 17,327.72 = 6,890.98 : x
  2. Step 2: Convert to fraction form
    12,556.40/17,327.72 = 6,890.98/x
  3. Step 3: Cross multiply
    12,556.40x = 17,327.72 × 6,890.98
  4. Step 4: Simplify right side
    12,556.40x = 119,404,971.97
  5. Step 5: Solve for x
    x = 119,404,971.97/12,556.40
  6. Step 6: Final answer
    x = 9,509.49

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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.