Home / 21,665.62-29,898.76-12,713.28

Finding the Fourth Proportional to 21,665.62, 29,898.76 and 12,713.28

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Solution

The fourth proportional to 21,665.62, 29,898.76 and 12,713.28 is: 17,544.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,665.62 : 29,898.76 = 12,713.28 : x
  2. Step 2: Convert to fraction form
    21,665.62/29,898.76 = 12,713.28/x
  3. Step 3: Cross multiply
    21,665.62x = 29,898.76 × 12,713.28
  4. Step 4: Simplify right side
    21,665.62x = 380,111,163.63
  5. Step 5: Solve for x
    x = 380,111,163.63/21,665.62
  6. Step 6: Final answer
    x = 17,544.44

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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.