Home / 13,240.62-19,855.26-4,921.20

Finding the Fourth Proportional to 13,240.62, 19,855.26 and 4,921.20

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Solution

The fourth proportional to 13,240.62, 19,855.26 and 4,921.20 is: 7,379.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.62 : 19,855.26 = 4,921.20 : x
  2. Step 2: Convert to fraction form
    13,240.62/19,855.26 = 4,921.20/x
  3. Step 3: Cross multiply
    13,240.62x = 19,855.26 × 4,921.20
  4. Step 4: Simplify right side
    13,240.62x = 97,711,705.51
  5. Step 5: Solve for x
    x = 97,711,705.51/13,240.62
  6. Step 6: Final answer
    x = 7,379.69

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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.