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Finding the Fourth Proportional to 15,024.69, 20,727.09 and 9,721.22

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Solution

The fourth proportional to 15,024.69, 20,727.09 and 9,721.22 is: 13,410.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,024.69 : 20,727.09 = 9,721.22 : x
  2. Step 2: Convert to fraction form
    15,024.69/20,727.09 = 9,721.22/x
  3. Step 3: Cross multiply
    15,024.69x = 20,727.09 × 9,721.22
  4. Step 4: Simplify right side
    15,024.69x = 201,492,498.21
  5. Step 5: Solve for x
    x = 201,492,498.21/15,024.69
  6. Step 6: Final answer
    x = 13,410.76

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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.