Home / 11,070.96-15,279-8,271.60

Finding the Fourth Proportional to 11,070.96, 15,279 and 8,271.60

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Solution

The fourth proportional to 11,070.96, 15,279 and 8,271.60 is: 11,415.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,070.96 : 15,279 = 8,271.60 : x
  2. Step 2: Convert to fraction form
    11,070.96/15,279 = 8,271.60/x
  3. Step 3: Cross multiply
    11,070.96x = 15,279 × 8,271.60
  4. Step 4: Simplify right side
    11,070.96x = 126,381,776.40
  5. Step 5: Solve for x
    x = 126,381,776.40/11,070.96
  6. Step 6: Final answer
    x = 11,415.61

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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.