Home / 18,690.32-28,020.36-7,001.84

Finding the Fourth Proportional to 18,690.32, 28,020.36 and 7,001.84

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Solution

The fourth proportional to 18,690.32, 28,020.36 and 7,001.84 is: 10,497.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.32 : 28,020.36 = 7,001.84 : x
  2. Step 2: Convert to fraction form
    18,690.32/28,020.36 = 7,001.84/x
  3. Step 3: Cross multiply
    18,690.32x = 28,020.36 × 7,001.84
  4. Step 4: Simplify right side
    18,690.32x = 196,194,077.46
  5. Step 5: Solve for x
    x = 196,194,077.46/18,690.32
  6. Step 6: Final answer
    x = 10,497.10

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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.