Home / 10,890.96-15,029.70-6,111.96

Finding the Fourth Proportional to 10,890.96, 15,029.70 and 6,111.96

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Solution

The fourth proportional to 10,890.96, 15,029.70 and 6,111.96 is: 8,434.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.96 : 15,029.70 = 6,111.96 : x
  2. Step 2: Convert to fraction form
    10,890.96/15,029.70 = 6,111.96/x
  3. Step 3: Cross multiply
    10,890.96x = 15,029.70 × 6,111.96
  4. Step 4: Simplify right side
    10,890.96x = 91,860,880.31
  5. Step 5: Solve for x
    x = 91,860,880.31/10,890.96
  6. Step 6: Final answer
    x = 8,434.60

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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.