Home / 13,705.27-20,557.87-5,379.47

Finding the Fourth Proportional to 13,705.27, 20,557.87 and 5,379.47

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Solution

The fourth proportional to 13,705.27, 20,557.87 and 5,379.47 is: 8,069.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.27 : 20,557.87 = 5,379.47 : x
  2. Step 2: Convert to fraction form
    13,705.27/20,557.87 = 5,379.47/x
  3. Step 3: Cross multiply
    13,705.27x = 20,557.87 × 5,379.47
  4. Step 4: Simplify right side
    13,705.27x = 110,590,444.93
  5. Step 5: Solve for x
    x = 110,590,444.93/13,705.27
  6. Step 6: Final answer
    x = 8,069.19

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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.