Home / 10,861.50-14,988.87-6,145.79

Finding the Fourth Proportional to 10,861.50, 14,988.87 and 6,145.79

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Solution

The fourth proportional to 10,861.50, 14,988.87 and 6,145.79 is: 8,481.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.50 : 14,988.87 = 6,145.79 : x
  2. Step 2: Convert to fraction form
    10,861.50/14,988.87 = 6,145.79/x
  3. Step 3: Cross multiply
    10,861.50x = 14,988.87 × 6,145.79
  4. Step 4: Simplify right side
    10,861.50x = 92,118,372.41
  5. Step 5: Solve for x
    x = 92,118,372.41/10,861.50
  6. Step 6: Final answer
    x = 8,481.18

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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.