Home / 11,007.36-15,189.12-8,916.48

Finding the Fourth Proportional to 11,007.36, 15,189.12 and 8,916.48

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Solution

The fourth proportional to 11,007.36, 15,189.12 and 8,916.48 is: 12,303.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,007.36 : 15,189.12 = 8,916.48 : x
  2. Step 2: Convert to fraction form
    11,007.36/15,189.12 = 8,916.48/x
  3. Step 3: Cross multiply
    11,007.36x = 15,189.12 × 8,916.48
  4. Step 4: Simplify right side
    11,007.36x = 135,433,484.70
  5. Step 5: Solve for x
    x = 135,433,484.70/11,007.36
  6. Step 6: Final answer
    x = 12,303.90

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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.