Home / 13,975.06-19,285.14-7,687.40

Finding the Fourth Proportional to 13,975.06, 19,285.14 and 7,687.40

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Solution

The fourth proportional to 13,975.06, 19,285.14 and 7,687.40 is: 10,608.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.06 : 19,285.14 = 7,687.40 : x
  2. Step 2: Convert to fraction form
    13,975.06/19,285.14 = 7,687.40/x
  3. Step 3: Cross multiply
    13,975.06x = 19,285.14 × 7,687.40
  4. Step 4: Simplify right side
    13,975.06x = 148,252,585.24
  5. Step 5: Solve for x
    x = 148,252,585.24/13,975.06
  6. Step 6: Final answer
    x = 10,608.37

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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.