Home / 21,566.16-29,756.79-12,611.91

Finding the Fourth Proportional to 21,566.16, 29,756.79 and 12,611.91

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Solution

The fourth proportional to 21,566.16, 29,756.79 and 12,611.91 is: 17,401.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,566.16 : 29,756.79 = 12,611.91 : x
  2. Step 2: Convert to fraction form
    21,566.16/29,756.79 = 12,611.91/x
  3. Step 3: Cross multiply
    21,566.16x = 29,756.79 × 12,611.91
  4. Step 4: Simplify right side
    21,566.16x = 375,289,957.37
  5. Step 5: Solve for x
    x = 375,289,957.37/21,566.16
  6. Step 6: Final answer
    x = 17,401.80

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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.