Home / 9,420.17-12,996.99-5,439.83

Finding the Fourth Proportional to 9,420.17, 12,996.99 and 5,439.83

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Solution

The fourth proportional to 9,420.17, 12,996.99 and 5,439.83 is: 7,505.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.17 : 12,996.99 = 5,439.83 : x
  2. Step 2: Convert to fraction form
    9,420.17/12,996.99 = 5,439.83/x
  3. Step 3: Cross multiply
    9,420.17x = 12,996.99 × 5,439.83
  4. Step 4: Simplify right side
    9,420.17x = 70,701,351.13
  5. Step 5: Solve for x
    x = 70,701,351.13/9,420.17
  6. Step 6: Final answer
    x = 7,505.32

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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.