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Finding the Fourth Proportional to 15,583.03, 21,503.73 and 8,509.30

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Solution

The fourth proportional to 15,583.03, 21,503.73 and 8,509.30 is: 11,742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,583.03 : 21,503.73 = 8,509.30 : x
  2. Step 2: Convert to fraction form
    15,583.03/21,503.73 = 8,509.30/x
  3. Step 3: Cross multiply
    15,583.03x = 21,503.73 × 8,509.30
  4. Step 4: Simplify right side
    15,583.03x = 182,981,689.69
  5. Step 5: Solve for x
    x = 182,981,689.69/15,583.03
  6. Step 6: Final answer
    x = 11,742.37

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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.