Home / 18,663.42-28,001.06-5,515.86

Finding the Fourth Proportional to 18,663.42, 28,001.06 and 5,515.86

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Solution

The fourth proportional to 18,663.42, 28,001.06 and 5,515.86 is: 8,275.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.42 : 28,001.06 = 5,515.86 : x
  2. Step 2: Convert to fraction form
    18,663.42/28,001.06 = 5,515.86/x
  3. Step 3: Cross multiply
    18,663.42x = 28,001.06 × 5,515.86
  4. Step 4: Simplify right side
    18,663.42x = 154,449,926.81
  5. Step 5: Solve for x
    x = 154,449,926.81/18,663.42
  6. Step 6: Final answer
    x = 8,275.54

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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.