Home / 18,743.50-28,090.86-7,637.18

Finding the Fourth Proportional to 18,743.50, 28,090.86 and 7,637.18

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Solution

The fourth proportional to 18,743.50, 28,090.86 and 7,637.18 is: 11,445.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.50 : 28,090.86 = 7,637.18 : x
  2. Step 2: Convert to fraction form
    18,743.50/28,090.86 = 7,637.18/x
  3. Step 3: Cross multiply
    18,743.50x = 28,090.86 × 7,637.18
  4. Step 4: Simplify right side
    18,743.50x = 214,534,954.17
  5. Step 5: Solve for x
    x = 214,534,954.17/18,743.50
  6. Step 6: Final answer
    x = 11,445.83

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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.