Home / 13,909.08-19,188.90-7,939.56

Finding the Fourth Proportional to 13,909.08, 19,188.90 and 7,939.56

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Solution

The fourth proportional to 13,909.08, 19,188.90 and 7,939.56 is: 10,953.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.08 : 19,188.90 = 7,939.56 : x
  2. Step 2: Convert to fraction form
    13,909.08/19,188.90 = 7,939.56/x
  3. Step 3: Cross multiply
    13,909.08x = 19,188.90 × 7,939.56
  4. Step 4: Simplify right side
    13,909.08x = 152,351,422.88
  5. Step 5: Solve for x
    x = 152,351,422.88/13,909.08
  6. Step 6: Final answer
    x = 10,953.38

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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.