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Finding the Fourth Proportional to 11,130.08, 15,353.16 and 7,944.08

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Solution

The fourth proportional to 11,130.08, 15,353.16 and 7,944.08 is: 10,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.08 : 15,353.16 = 7,944.08 : x
  2. Step 2: Convert to fraction form
    11,130.08/15,353.16 = 7,944.08/x
  3. Step 3: Cross multiply
    11,130.08x = 15,353.16 × 7,944.08
  4. Step 4: Simplify right side
    11,130.08x = 121,966,731.29
  5. Step 5: Solve for x
    x = 121,966,731.29/11,130.08
  6. Step 6: Final answer
    x = 10,958.30

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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.