Home / 13,807.80-20,699.55-8,263.35

Finding the Fourth Proportional to 13,807.80, 20,699.55 and 8,263.35

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Solution

The fourth proportional to 13,807.80, 20,699.55 and 8,263.35 is: 12,387.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.80 : 20,699.55 = 8,263.35 : x
  2. Step 2: Convert to fraction form
    13,807.80/20,699.55 = 8,263.35/x
  3. Step 3: Cross multiply
    13,807.80x = 20,699.55 × 8,263.35
  4. Step 4: Simplify right side
    13,807.80x = 171,047,626.49
  5. Step 5: Solve for x
    x = 171,047,626.49/13,807.80
  6. Step 6: Final answer
    x = 12,387.75

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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.