Home / 21,416.67-29,555.04-11,857.22

Finding the Fourth Proportional to 21,416.67, 29,555.04 and 11,857.22

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Solution

The fourth proportional to 21,416.67, 29,555.04 and 11,857.22 is: 16,362.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.67 : 29,555.04 = 11,857.22 : x
  2. Step 2: Convert to fraction form
    21,416.67/29,555.04 = 11,857.22/x
  3. Step 3: Cross multiply
    21,416.67x = 29,555.04 × 11,857.22
  4. Step 4: Simplify right side
    21,416.67x = 350,440,618.91
  5. Step 5: Solve for x
    x = 350,440,618.91/21,416.67
  6. Step 6: Final answer
    x = 16,362.98

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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.