Home / 21,586.74-29,782.84-12,153.48

Finding the Fourth Proportional to 21,586.74, 29,782.84 and 12,153.48

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Solution

The fourth proportional to 21,586.74, 29,782.84 and 12,153.48 is: 16,767.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,586.74 : 29,782.84 = 12,153.48 : x
  2. Step 2: Convert to fraction form
    21,586.74/29,782.84 = 12,153.48/x
  3. Step 3: Cross multiply
    21,586.74x = 29,782.84 × 12,153.48
  4. Step 4: Simplify right side
    21,586.74x = 361,965,150.28
  5. Step 5: Solve for x
    x = 361,965,150.28/21,586.74
  6. Step 6: Final answer
    x = 16,767.94

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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.