Home / 11,112.90-16,669.35-9,903.30

Finding the Fourth Proportional to 11,112.90, 16,669.35 and 9,903.30

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Solution

The fourth proportional to 11,112.90, 16,669.35 and 9,903.30 is: 14,854.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.90 : 16,669.35 = 9,903.30 : x
  2. Step 2: Convert to fraction form
    11,112.90/16,669.35 = 9,903.30/x
  3. Step 3: Cross multiply
    11,112.90x = 16,669.35 × 9,903.30
  4. Step 4: Simplify right side
    11,112.90x = 165,081,573.86
  5. Step 5: Solve for x
    x = 165,081,573.86/11,112.90
  6. Step 6: Final answer
    x = 14,854.95

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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.