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Finding the Fourth Proportional to 18,690.93, 28,039.20 and 6,036.46

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Solution

The fourth proportional to 18,690.93, 28,039.20 and 6,036.46 is: 9,055.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.93 : 28,039.20 = 6,036.46 : x
  2. Step 2: Convert to fraction form
    18,690.93/28,039.20 = 6,036.46/x
  3. Step 3: Cross multiply
    18,690.93x = 28,039.20 × 6,036.46
  4. Step 4: Simplify right side
    18,690.93x = 169,257,479.05
  5. Step 5: Solve for x
    x = 169,257,479.05/18,690.93
  6. Step 6: Final answer
    x = 9,055.59

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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.