Home / 9,861.48-13,585.04-8,440.64

Finding the Fourth Proportional to 9,861.48, 13,585.04 and 8,440.64

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Solution

The fourth proportional to 9,861.48, 13,585.04 and 8,440.64 is: 11,627.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.48 : 13,585.04 = 8,440.64 : x
  2. Step 2: Convert to fraction form
    9,861.48/13,585.04 = 8,440.64/x
  3. Step 3: Cross multiply
    9,861.48x = 13,585.04 × 8,440.64
  4. Step 4: Simplify right side
    9,861.48x = 114,666,432.03
  5. Step 5: Solve for x
    x = 114,666,432.03/9,861.48
  6. Step 6: Final answer
    x = 11,627.71

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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.