Home / 18,744.08-28,108.20-7,643.16

Finding the Fourth Proportional to 18,744.08, 28,108.20 and 7,643.16

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Solution

The fourth proportional to 18,744.08, 28,108.20 and 7,643.16 is: 11,461.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.08 : 28,108.20 = 7,643.16 : x
  2. Step 2: Convert to fraction form
    18,744.08/28,108.20 = 7,643.16/x
  3. Step 3: Cross multiply
    18,744.08x = 28,108.20 × 7,643.16
  4. Step 4: Simplify right side
    18,744.08x = 214,835,469.91
  5. Step 5: Solve for x
    x = 214,835,469.91/18,744.08
  6. Step 6: Final answer
    x = 11,461.51

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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.