Home / 11,688.48-17,498.40-6,128.64

Finding the Fourth Proportional to 11,688.48, 17,498.40 and 6,128.64

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Solution

The fourth proportional to 11,688.48, 17,498.40 and 6,128.64 is: 9,174.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.48 : 17,498.40 = 6,128.64 : x
  2. Step 2: Convert to fraction form
    11,688.48/17,498.40 = 6,128.64/x
  3. Step 3: Cross multiply
    11,688.48x = 17,498.40 × 6,128.64
  4. Step 4: Simplify right side
    11,688.48x = 107,241,394.18
  5. Step 5: Solve for x
    x = 107,241,394.18/11,688.48
  6. Step 6: Final answer
    x = 9,174.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.