Home / 13,782.46-19,020.39-7,814.08

Finding the Fourth Proportional to 13,782.46, 19,020.39 and 7,814.08

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Solution

The fourth proportional to 13,782.46, 19,020.39 and 7,814.08 is: 10,783.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.46 : 19,020.39 = 7,814.08 : x
  2. Step 2: Convert to fraction form
    13,782.46/19,020.39 = 7,814.08/x
  3. Step 3: Cross multiply
    13,782.46x = 19,020.39 × 7,814.08
  4. Step 4: Simplify right side
    13,782.46x = 148,626,849.09
  5. Step 5: Solve for x
    x = 148,626,849.09/13,782.46
  6. Step 6: Final answer
    x = 10,783.77

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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.