Home / 11,420.12-15,759.42-6,384.36

Finding the Fourth Proportional to 11,420.12, 15,759.42 and 6,384.36

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Solution

The fourth proportional to 11,420.12, 15,759.42 and 6,384.36 is: 8,810.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.12 : 15,759.42 = 6,384.36 : x
  2. Step 2: Convert to fraction form
    11,420.12/15,759.42 = 6,384.36/x
  3. Step 3: Cross multiply
    11,420.12x = 15,759.42 × 6,384.36
  4. Step 4: Simplify right side
    11,420.12x = 100,613,810.67
  5. Step 5: Solve for x
    x = 100,613,810.67/11,420.12
  6. Step 6: Final answer
    x = 8,810.23

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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.