Home / 13,975.34-19,285.80-7,687.58

Finding the Fourth Proportional to 13,975.34, 19,285.80 and 7,687.58

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Solution

The fourth proportional to 13,975.34, 19,285.80 and 7,687.58 is: 10,608.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.34 : 19,285.80 = 7,687.58 : x
  2. Step 2: Convert to fraction form
    13,975.34/19,285.80 = 7,687.58/x
  3. Step 3: Cross multiply
    13,975.34x = 19,285.80 × 7,687.58
  4. Step 4: Simplify right side
    13,975.34x = 148,261,130.36
  5. Step 5: Solve for x
    x = 148,261,130.36/13,975.34
  6. Step 6: Final answer
    x = 10,608.77

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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.