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Finding the Fourth Proportional to 19,121, 28,620.08 and 10,214.06

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Solution

The fourth proportional to 19,121, 28,620.08 and 10,214.06 is: 15,288.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121 : 28,620.08 = 10,214.06 : x
  2. Step 2: Convert to fraction form
    19,121/28,620.08 = 10,214.06/x
  3. Step 3: Cross multiply
    19,121x = 28,620.08 × 10,214.06
  4. Step 4: Simplify right side
    19,121x = 292,327,214.32
  5. Step 5: Solve for x
    x = 292,327,214.32/19,121
  6. Step 6: Final answer
    x = 15,288.28

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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.