Home / 9,909.30-14,829.55-7,811.70

Finding the Fourth Proportional to 9,909.30, 14,829.55 and 7,811.70

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Solution

The fourth proportional to 9,909.30, 14,829.55 and 7,811.70 is: 11,690.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,909.30 : 14,829.55 = 7,811.70 : x
  2. Step 2: Convert to fraction form
    9,909.30/14,829.55 = 7,811.70/x
  3. Step 3: Cross multiply
    9,909.30x = 14,829.55 × 7,811.70
  4. Step 4: Simplify right side
    9,909.30x = 115,843,995.74
  5. Step 5: Solve for x
    x = 115,843,995.74/9,909.30
  6. Step 6: Final answer
    x = 11,690.43

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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.