Home / 15,235.15-21,015.70-9,181.26

Finding the Fourth Proportional to 15,235.15, 21,015.70 and 9,181.26

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Solution

The fourth proportional to 15,235.15, 21,015.70 and 9,181.26 is: 12,664.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.15 : 21,015.70 = 9,181.26 : x
  2. Step 2: Convert to fraction form
    15,235.15/21,015.70 = 9,181.26/x
  3. Step 3: Cross multiply
    15,235.15x = 21,015.70 × 9,181.26
  4. Step 4: Simplify right side
    15,235.15x = 192,950,582.83
  5. Step 5: Solve for x
    x = 192,950,582.83/15,235.15
  6. Step 6: Final answer
    x = 12,664.83

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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.