Home / 11,148.98-15,389.60-7,609.68

Finding the Fourth Proportional to 11,148.98, 15,389.60 and 7,609.68

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Solution

The fourth proportional to 11,148.98, 15,389.60 and 7,609.68 is: 10,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.98 : 15,389.60 = 7,609.68 : x
  2. Step 2: Convert to fraction form
    11,148.98/15,389.60 = 7,609.68/x
  3. Step 3: Cross multiply
    11,148.98x = 15,389.60 × 7,609.68
  4. Step 4: Simplify right side
    11,148.98x = 117,109,893.28
  5. Step 5: Solve for x
    x = 117,109,893.28/11,148.98
  6. Step 6: Final answer
    x = 10,504.10

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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.