Home / 18,764.79-28,142.97-5,615.47

Finding the Fourth Proportional to 18,764.79, 28,142.97 and 5,615.47

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Solution

The fourth proportional to 18,764.79, 28,142.97 and 5,615.47 is: 8,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.79 : 28,142.97 = 5,615.47 : x
  2. Step 2: Convert to fraction form
    18,764.79/28,142.97 = 5,615.47/x
  3. Step 3: Cross multiply
    18,764.79x = 28,142.97 × 5,615.47
  4. Step 4: Simplify right side
    18,764.79x = 158,036,003.75
  5. Step 5: Solve for x
    x = 158,036,003.75/18,764.79
  6. Step 6: Final answer
    x = 8,421.94

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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.