Home / 20,657.16-28,502.16-11,702.61

Finding the Fourth Proportional to 20,657.16, 28,502.16 and 11,702.61

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Solution

The fourth proportional to 20,657.16, 28,502.16 and 11,702.61 is: 16,146.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.16 : 28,502.16 = 11,702.61 : x
  2. Step 2: Convert to fraction form
    20,657.16/28,502.16 = 11,702.61/x
  3. Step 3: Cross multiply
    20,657.16x = 28,502.16 × 11,702.61
  4. Step 4: Simplify right side
    20,657.16x = 333,549,662.64
  5. Step 5: Solve for x
    x = 333,549,662.64/20,657.16
  6. Step 6: Final answer
    x = 16,146.93

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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.