Home / 11,420.19-15,759.36-6,384.42

Finding the Fourth Proportional to 11,420.19, 15,759.36 and 6,384.42

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Solution

The fourth proportional to 11,420.19, 15,759.36 and 6,384.42 is: 8,810.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.19 : 15,759.36 = 6,384.42 : x
  2. Step 2: Convert to fraction form
    11,420.19/15,759.36 = 6,384.42/x
  3. Step 3: Cross multiply
    11,420.19x = 15,759.36 × 6,384.42
  4. Step 4: Simplify right side
    11,420.19x = 100,614,373.17
  5. Step 5: Solve for x
    x = 100,614,373.17/11,420.19
  6. Step 6: Final answer
    x = 8,810.22

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Half scale
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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.