Home / 11,615.48-16,030.80-6,899.78

Finding the Fourth Proportional to 11,615.48, 16,030.80 and 6,899.78

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Solution

The fourth proportional to 11,615.48, 16,030.80 and 6,899.78 is: 9,522.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,615.48 : 16,030.80 = 6,899.78 : x
  2. Step 2: Convert to fraction form
    11,615.48/16,030.80 = 6,899.78/x
  3. Step 3: Cross multiply
    11,615.48x = 16,030.80 × 6,899.78
  4. Step 4: Simplify right side
    11,615.48x = 110,608,993.22
  5. Step 5: Solve for x
    x = 110,608,993.22/11,615.48
  6. Step 6: Final answer
    x = 9,522.55

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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.