Home / 11,103.21-15,322.89-6,387.50

Finding the Fourth Proportional to 11,103.21, 15,322.89 and 6,387.50

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Solution

The fourth proportional to 11,103.21, 15,322.89 and 6,387.50 is: 8,815.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,103.21 : 15,322.89 = 6,387.50 : x
  2. Step 2: Convert to fraction form
    11,103.21/15,322.89 = 6,387.50/x
  3. Step 3: Cross multiply
    11,103.21x = 15,322.89 × 6,387.50
  4. Step 4: Simplify right side
    11,103.21x = 97,874,959.88
  5. Step 5: Solve for x
    x = 97,874,959.88/11,103.21
  6. Step 6: Final answer
    x = 8,815.01

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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.