Home / 14,189.36-19,581.13-7,815.83

Finding the Fourth Proportional to 14,189.36, 19,581.13 and 7,815.83

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Solution

The fourth proportional to 14,189.36, 19,581.13 and 7,815.83 is: 10,785.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,189.36 : 19,581.13 = 7,815.83 : x
  2. Step 2: Convert to fraction form
    14,189.36/19,581.13 = 7,815.83/x
  3. Step 3: Cross multiply
    14,189.36x = 19,581.13 × 7,815.83
  4. Step 4: Simplify right side
    14,189.36x = 153,042,783.29
  5. Step 5: Solve for x
    x = 153,042,783.29/14,189.36
  6. Step 6: Final answer
    x = 10,785.74

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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.