Home / 13,635.27-18,816.75-7,666.77

Finding the Fourth Proportional to 13,635.27, 18,816.75 and 7,666.77

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Solution

The fourth proportional to 13,635.27, 18,816.75 and 7,666.77 is: 10,580.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.27 : 18,816.75 = 7,666.77 : x
  2. Step 2: Convert to fraction form
    13,635.27/18,816.75 = 7,666.77/x
  3. Step 3: Cross multiply
    13,635.27x = 18,816.75 × 7,666.77
  4. Step 4: Simplify right side
    13,635.27x = 144,263,694.40
  5. Step 5: Solve for x
    x = 144,263,694.40/13,635.27
  6. Step 6: Final answer
    x = 10,580.19

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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.