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Finding the Fourth Proportional to 20,698.58, 31,030.44 and 9,002.99

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Solution

The fourth proportional to 20,698.58, 31,030.44 and 9,002.99 is: 13,496.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.58 : 31,030.44 = 9,002.99 : x
  2. Step 2: Convert to fraction form
    20,698.58/31,030.44 = 9,002.99/x
  3. Step 3: Cross multiply
    20,698.58x = 31,030.44 × 9,002.99
  4. Step 4: Simplify right side
    20,698.58x = 279,366,585.86
  5. Step 5: Solve for x
    x = 279,366,585.86/20,698.58
  6. Step 6: Final answer
    x = 13,496.90

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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.