Home / 13,355.08-18,429.93-7,979.95

Finding the Fourth Proportional to 13,355.08, 18,429.93 and 7,979.95

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Solution

The fourth proportional to 13,355.08, 18,429.93 and 7,979.95 is: 11,012.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.08 : 18,429.93 = 7,979.95 : x
  2. Step 2: Convert to fraction form
    13,355.08/18,429.93 = 7,979.95/x
  3. Step 3: Cross multiply
    13,355.08x = 18,429.93 × 7,979.95
  4. Step 4: Simplify right side
    13,355.08x = 147,069,919.90
  5. Step 5: Solve for x
    x = 147,069,919.90/13,355.08
  6. Step 6: Final answer
    x = 11,012.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.