Home / 13,889.62-19,147.72-9,903.80

Finding the Fourth Proportional to 13,889.62, 19,147.72 and 9,903.80

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Solution

The fourth proportional to 13,889.62, 19,147.72 and 9,903.80 is: 13,653.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.62 : 19,147.72 = 9,903.80 : x
  2. Step 2: Convert to fraction form
    13,889.62/19,147.72 = 9,903.80/x
  3. Step 3: Cross multiply
    13,889.62x = 19,147.72 × 9,903.80
  4. Step 4: Simplify right side
    13,889.62x = 189,635,189.34
  5. Step 5: Solve for x
    x = 189,635,189.34/13,889.62
  6. Step 6: Final answer
    x = 13,653.01

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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.