Home / 11,420.84-15,759.56-6,384.54

Finding the Fourth Proportional to 11,420.84, 15,759.56 and 6,384.54

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Solution

The fourth proportional to 11,420.84, 15,759.56 and 6,384.54 is: 8,809.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.84 : 15,759.56 = 6,384.54 : x
  2. Step 2: Convert to fraction form
    11,420.84/15,759.56 = 6,384.54/x
  3. Step 3: Cross multiply
    11,420.84x = 15,759.56 × 6,384.54
  4. Step 4: Simplify right side
    11,420.84x = 100,617,541.20
  5. Step 5: Solve for x
    x = 100,617,541.20/11,420.84
  6. Step 6: Final answer
    x = 8,809.99

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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.