Home / 13,635.04-18,815.92-7,666.72

Finding the Fourth Proportional to 13,635.04, 18,815.92 and 7,666.72

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Solution

The fourth proportional to 13,635.04, 18,815.92 and 7,666.72 is: 10,579.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.04 : 18,815.92 = 7,666.72 : x
  2. Step 2: Convert to fraction form
    13,635.04/18,815.92 = 7,666.72/x
  3. Step 3: Cross multiply
    13,635.04x = 18,815.92 × 7,666.72
  4. Step 4: Simplify right side
    13,635.04x = 144,256,390.18
  5. Step 5: Solve for x
    x = 144,256,390.18/13,635.04
  6. Step 6: Final answer
    x = 10,579.83

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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.