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Finding the Fourth Proportional to 19,010.68, 28,516.20 and 7,322.20

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Solution

The fourth proportional to 19,010.68, 28,516.20 and 7,322.20 is: 10,983.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,010.68 : 28,516.20 = 7,322.20 : x
  2. Step 2: Convert to fraction form
    19,010.68/28,516.20 = 7,322.20/x
  3. Step 3: Cross multiply
    19,010.68x = 28,516.20 × 7,322.20
  4. Step 4: Simplify right side
    19,010.68x = 208,801,319.64
  5. Step 5: Solve for x
    x = 208,801,319.64/19,010.68
  6. Step 6: Final answer
    x = 10,983.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.