Home / 12,828.64-17,702.40-7,162.96

Finding the Fourth Proportional to 12,828.64, 17,702.40 and 7,162.96

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Solution

The fourth proportional to 12,828.64, 17,702.40 and 7,162.96 is: 9,884.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,828.64 : 17,702.40 = 7,162.96 : x
  2. Step 2: Convert to fraction form
    12,828.64/17,702.40 = 7,162.96/x
  3. Step 3: Cross multiply
    12,828.64x = 17,702.40 × 7,162.96
  4. Step 4: Simplify right side
    12,828.64x = 126,801,583.10
  5. Step 5: Solve for x
    x = 126,801,583.10/12,828.64
  6. Step 6: Final answer
    x = 9,884.26

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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.