Home / 19,689.83-27,172.64-11,192.30

Finding the Fourth Proportional to 19,689.83, 27,172.64 and 11,192.30

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Solution

The fourth proportional to 19,689.83, 27,172.64 and 11,192.30 is: 15,445.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.83 : 27,172.64 = 11,192.30 : x
  2. Step 2: Convert to fraction form
    19,689.83/27,172.64 = 11,192.30/x
  3. Step 3: Cross multiply
    19,689.83x = 27,172.64 × 11,192.30
  4. Step 4: Simplify right side
    19,689.83x = 304,124,350.64
  5. Step 5: Solve for x
    x = 304,124,350.64/19,689.83
  6. Step 6: Final answer
    x = 15,445.76

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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.