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Finding the Fourth Proportional to 12,668.48, 19,006.20 and 5,276.40

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Solution

The fourth proportional to 12,668.48, 19,006.20 and 5,276.40 is: 7,916.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.48 : 19,006.20 = 5,276.40 : x
  2. Step 2: Convert to fraction form
    12,668.48/19,006.20 = 5,276.40/x
  3. Step 3: Cross multiply
    12,668.48x = 19,006.20 × 5,276.40
  4. Step 4: Simplify right side
    12,668.48x = 100,284,313.68
  5. Step 5: Solve for x
    x = 100,284,313.68/12,668.48
  6. Step 6: Final answer
    x = 7,916.05

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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.