Home / 11,509.20-15,885.36-7,316.64

Finding the Fourth Proportional to 11,509.20, 15,885.36 and 7,316.64

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Solution

The fourth proportional to 11,509.20, 15,885.36 and 7,316.64 is: 10,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,509.20 : 15,885.36 = 7,316.64 : x
  2. Step 2: Convert to fraction form
    11,509.20/15,885.36 = 7,316.64/x
  3. Step 3: Cross multiply
    11,509.20x = 15,885.36 × 7,316.64
  4. Step 4: Simplify right side
    11,509.20x = 116,227,460.39
  5. Step 5: Solve for x
    x = 116,227,460.39/11,509.20
  6. Step 6: Final answer
    x = 10,098.66

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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.