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Finding the Fourth Proportional to 26,613.45, 39,913.36 and 7,889.11

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Solution

The fourth proportional to 26,613.45, 39,913.36 and 7,889.11 is: 11,831.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,613.45 : 39,913.36 = 7,889.11 : x
  2. Step 2: Convert to fraction form
    26,613.45/39,913.36 = 7,889.11/x
  3. Step 3: Cross multiply
    26,613.45x = 39,913.36 × 7,889.11
  4. Step 4: Simplify right side
    26,613.45x = 314,880,668.22
  5. Step 5: Solve for x
    x = 314,880,668.22/26,613.45
  6. Step 6: Final answer
    x = 11,831.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.