Home / 13,926.96-19,219.20-7,639.32

Finding the Fourth Proportional to 13,926.96, 19,219.20 and 7,639.32

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Solution

The fourth proportional to 13,926.96, 19,219.20 and 7,639.32 is: 10,542.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.96 : 19,219.20 = 7,639.32 : x
  2. Step 2: Convert to fraction form
    13,926.96/19,219.20 = 7,639.32/x
  3. Step 3: Cross multiply
    13,926.96x = 19,219.20 × 7,639.32
  4. Step 4: Simplify right side
    13,926.96x = 146,821,618.94
  5. Step 5: Solve for x
    x = 146,821,618.94/13,926.96
  6. Step 6: Final answer
    x = 10,542.26

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1.5x scale

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.