Home / 18,762.90-28,135.26-7,665.18

Finding the Fourth Proportional to 18,762.90, 28,135.26 and 7,665.18

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Solution

The fourth proportional to 18,762.90, 28,135.26 and 7,665.18 is: 11,494.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.90 : 28,135.26 = 7,665.18 : x
  2. Step 2: Convert to fraction form
    18,762.90/28,135.26 = 7,665.18/x
  3. Step 3: Cross multiply
    18,762.90x = 28,135.26 × 7,665.18
  4. Step 4: Simplify right side
    18,762.90x = 215,661,832.25
  5. Step 5: Solve for x
    x = 215,661,832.25/18,762.90
  6. Step 6: Final answer
    x = 11,494.06

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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.