Home / 10,911.74-15,056.43-6,131.12

Finding the Fourth Proportional to 10,911.74, 15,056.43 and 6,131.12

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Solution

The fourth proportional to 10,911.74, 15,056.43 and 6,131.12 is: 8,459.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.74 : 15,056.43 = 6,131.12 : x
  2. Step 2: Convert to fraction form
    10,911.74/15,056.43 = 6,131.12/x
  3. Step 3: Cross multiply
    10,911.74x = 15,056.43 × 6,131.12
  4. Step 4: Simplify right side
    10,911.74x = 92,312,779.10
  5. Step 5: Solve for x
    x = 92,312,779.10/10,911.74
  6. Step 6: Final answer
    x = 8,459.95

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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.