Home / 15,403.37-21,259.26-8,690.90

Finding the Fourth Proportional to 15,403.37, 21,259.26 and 8,690.90

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Solution

The fourth proportional to 15,403.37, 21,259.26 and 8,690.90 is: 11,994.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,403.37 : 21,259.26 = 8,690.90 : x
  2. Step 2: Convert to fraction form
    15,403.37/21,259.26 = 8,690.90/x
  3. Step 3: Cross multiply
    15,403.37x = 21,259.26 × 8,690.90
  4. Step 4: Simplify right side
    15,403.37x = 184,761,996.44
  5. Step 5: Solve for x
    x = 184,761,996.44/15,403.37
  6. Step 6: Final answer
    x = 11,994.91

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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.