Home / 18,935.08-28,400.10-5,085.16

Finding the Fourth Proportional to 18,935.08, 28,400.10 and 5,085.16

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Solution

The fourth proportional to 18,935.08, 28,400.10 and 5,085.16 is: 7,627.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.08 : 28,400.10 = 5,085.16 : x
  2. Step 2: Convert to fraction form
    18,935.08/28,400.10 = 5,085.16/x
  3. Step 3: Cross multiply
    18,935.08x = 28,400.10 × 5,085.16
  4. Step 4: Simplify right side
    18,935.08x = 144,419,052.52
  5. Step 5: Solve for x
    x = 144,419,052.52/18,935.08
  6. Step 6: Final answer
    x = 7,627.06

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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.