Home / 14,388.51-21,577.10-6,990.78

Finding the Fourth Proportional to 14,388.51, 21,577.10 and 6,990.78

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Solution

The fourth proportional to 14,388.51, 21,577.10 and 6,990.78 is: 10,483.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,388.51 : 21,577.10 = 6,990.78 : x
  2. Step 2: Convert to fraction form
    14,388.51/21,577.10 = 6,990.78/x
  3. Step 3: Cross multiply
    14,388.51x = 21,577.10 × 6,990.78
  4. Step 4: Simplify right side
    14,388.51x = 150,840,724.18
  5. Step 5: Solve for x
    x = 150,840,724.18/14,388.51
  6. Step 6: Final answer
    x = 10,483.42

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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.