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Finding the Fourth Proportional to 18,890.67, 28,342.14 and 9,030.69

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Solution

The fourth proportional to 18,890.67, 28,342.14 and 9,030.69 is: 13,548.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.67 : 28,342.14 = 9,030.69 : x
  2. Step 2: Convert to fraction form
    18,890.67/28,342.14 = 9,030.69/x
  3. Step 3: Cross multiply
    18,890.67x = 28,342.14 × 9,030.69
  4. Step 4: Simplify right side
    18,890.67x = 255,949,080.28
  5. Step 5: Solve for x
    x = 255,949,080.28/18,890.67
  6. Step 6: Final answer
    x = 13,548.97

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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.