Home / 13,909.86-19,195.34-8,603.28

Finding the Fourth Proportional to 13,909.86, 19,195.34 and 8,603.28

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Solution

The fourth proportional to 13,909.86, 19,195.34 and 8,603.28 is: 11,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.86 : 19,195.34 = 8,603.28 : x
  2. Step 2: Convert to fraction form
    13,909.86/19,195.34 = 8,603.28/x
  3. Step 3: Cross multiply
    13,909.86x = 19,195.34 × 8,603.28
  4. Step 4: Simplify right side
    13,909.86x = 165,142,884.72
  5. Step 5: Solve for x
    x = 165,142,884.72/13,909.86
  6. Step 6: Final answer
    x = 11,872.36

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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.