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Finding the Fourth Proportional to 35,409.52, 53,081.47 and 12,019.56

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Solution

The fourth proportional to 35,409.52, 53,081.47 and 12,019.56 is: 18,018.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,409.52 : 53,081.47 = 12,019.56 : x
  2. Step 2: Convert to fraction form
    35,409.52/53,081.47 = 12,019.56/x
  3. Step 3: Cross multiply
    35,409.52x = 53,081.47 × 12,019.56
  4. Step 4: Simplify right side
    35,409.52x = 638,015,913.55
  5. Step 5: Solve for x
    x = 638,015,913.55/35,409.52
  6. Step 6: Final answer
    x = 18,018.20

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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.