Home / 13,328.31-19,999.39-5,436.62

Finding the Fourth Proportional to 13,328.31, 19,999.39 and 5,436.62

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Solution

The fourth proportional to 13,328.31, 19,999.39 and 5,436.62 is: 8,157.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.31 : 19,999.39 = 5,436.62 : x
  2. Step 2: Convert to fraction form
    13,328.31/19,999.39 = 5,436.62/x
  3. Step 3: Cross multiply
    13,328.31x = 19,999.39 × 5,436.62
  4. Step 4: Simplify right side
    13,328.31x = 108,728,970.07
  5. Step 5: Solve for x
    x = 108,728,970.07/13,328.31
  6. Step 6: Final answer
    x = 8,157.75

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1.5x scale

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.