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Finding the Fourth Proportional to 13,753, 18,979.50 and 7,465.36

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Solution

The fourth proportional to 13,753, 18,979.50 and 7,465.36 is: 10,302.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753 : 18,979.50 = 7,465.36 : x
  2. Step 2: Convert to fraction form
    13,753/18,979.50 = 7,465.36/x
  3. Step 3: Cross multiply
    13,753x = 18,979.50 × 7,465.36
  4. Step 4: Simplify right side
    13,753x = 141,688,800.12
  5. Step 5: Solve for x
    x = 141,688,800.12/13,753
  6. Step 6: Final answer
    x = 10,302.39

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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.