Home / 21,519.75-29,698.77-12,088.32

Finding the Fourth Proportional to 21,519.75, 29,698.77 and 12,088.32

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Solution

The fourth proportional to 21,519.75, 29,698.77 and 12,088.32 is: 16,682.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,519.75 : 29,698.77 = 12,088.32 : x
  2. Step 2: Convert to fraction form
    21,519.75/29,698.77 = 12,088.32/x
  3. Step 3: Cross multiply
    21,519.75x = 29,698.77 × 12,088.32
  4. Step 4: Simplify right side
    21,519.75x = 359,008,235.37
  5. Step 5: Solve for x
    x = 359,008,235.37/21,519.75
  6. Step 6: Final answer
    x = 16,682.73

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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.