Home / 13,319.55-19,979.33-3,458.00

Finding the Fourth Proportional to 13,319.55, 19,979.33 and 3,458.00

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Solution

The fourth proportional to 13,319.55, 19,979.33 and 3,458.00 is: 5,186.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.55 : 19,979.33 = 3,458.00 : x
  2. Step 2: Convert to fraction form
    13,319.55/19,979.33 = 3,458.00/x
  3. Step 3: Cross multiply
    13,319.55x = 19,979.33 × 3,458.00
  4. Step 4: Simplify right side
    13,319.55x = 69,088,405.95
  5. Step 5: Solve for x
    x = 69,088,405.95/13,319.55
  6. Step 6: Final answer
    x = 5,186.99

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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.