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Finding the Fourth Proportional to 13,800.66, 19,044.78 and 7,513.02

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Solution

The fourth proportional to 13,800.66, 19,044.78 and 7,513.02 is: 10,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.66 : 19,044.78 = 7,513.02 : x
  2. Step 2: Convert to fraction form
    13,800.66/19,044.78 = 7,513.02/x
  3. Step 3: Cross multiply
    13,800.66x = 19,044.78 × 7,513.02
  4. Step 4: Simplify right side
    13,800.66x = 143,083,813.04
  5. Step 5: Solve for x
    x = 143,083,813.04/13,800.66
  6. Step 6: Final answer
    x = 10,367.90

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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.