Home / 15,705.26-21,672.45-8,630.31

Finding the Fourth Proportional to 15,705.26, 21,672.45 and 8,630.31

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Solution

The fourth proportional to 15,705.26, 21,672.45 and 8,630.31 is: 11,909.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,705.26 : 21,672.45 = 8,630.31 : x
  2. Step 2: Convert to fraction form
    15,705.26/21,672.45 = 8,630.31/x
  3. Step 3: Cross multiply
    15,705.26x = 21,672.45 × 8,630.31
  4. Step 4: Simplify right side
    15,705.26x = 187,039,961.96
  5. Step 5: Solve for x
    x = 187,039,961.96/15,705.26
  6. Step 6: Final answer
    x = 11,909.39

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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.