Home / 13,635.17-18,816.41-7,666.86

Finding the Fourth Proportional to 13,635.17, 18,816.41 and 7,666.86

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Solution

The fourth proportional to 13,635.17, 18,816.41 and 7,666.86 is: 10,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.17 : 18,816.41 = 7,666.86 : x
  2. Step 2: Convert to fraction form
    13,635.17/18,816.41 = 7,666.86/x
  3. Step 3: Cross multiply
    13,635.17x = 18,816.41 × 7,666.86
  4. Step 4: Simplify right side
    13,635.17x = 144,262,781.17
  5. Step 5: Solve for x
    x = 144,262,781.17/13,635.17
  6. Step 6: Final answer
    x = 10,580.20

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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.