Home / 15,219.32-21,029.48-11,712.82

Finding the Fourth Proportional to 15,219.32, 21,029.48 and 11,712.82

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Solution

The fourth proportional to 15,219.32, 21,029.48 and 11,712.82 is: 16,184.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.32 : 21,029.48 = 11,712.82 : x
  2. Step 2: Convert to fraction form
    15,219.32/21,029.48 = 11,712.82/x
  3. Step 3: Cross multiply
    15,219.32x = 21,029.48 × 11,712.82
  4. Step 4: Simplify right side
    15,219.32x = 246,314,513.93
  5. Step 5: Solve for x
    x = 246,314,513.93/15,219.32
  6. Step 6: Final answer
    x = 16,184.33

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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.