Home / 15,879.96-21,909.27-9,164.70

Finding the Fourth Proportional to 15,879.96, 21,909.27 and 9,164.70

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Solution

The fourth proportional to 15,879.96, 21,909.27 and 9,164.70 is: 12,644.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,879.96 : 21,909.27 = 9,164.70 : x
  2. Step 2: Convert to fraction form
    15,879.96/21,909.27 = 9,164.70/x
  3. Step 3: Cross multiply
    15,879.96x = 21,909.27 × 9,164.70
  4. Step 4: Simplify right side
    15,879.96x = 200,791,886.77
  5. Step 5: Solve for x
    x = 200,791,886.77/15,879.96
  6. Step 6: Final answer
    x = 12,644.36

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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.