Home / 10,900.60-16,326.60-8,427.40

Finding the Fourth Proportional to 10,900.60, 16,326.60 and 8,427.40

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Solution

The fourth proportional to 10,900.60, 16,326.60 and 8,427.40 is: 12,622.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.60 : 16,326.60 = 8,427.40 : x
  2. Step 2: Convert to fraction form
    10,900.60/16,326.60 = 8,427.40/x
  3. Step 3: Cross multiply
    10,900.60x = 16,326.60 × 8,427.40
  4. Step 4: Simplify right side
    10,900.60x = 137,590,788.84
  5. Step 5: Solve for x
    x = 137,590,788.84/10,900.60
  6. Step 6: Final answer
    x = 12,622.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.