Home / 13,909.18-20,853.30-4,543.60

Finding the Fourth Proportional to 13,909.18, 20,853.30 and 4,543.60

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Solution

The fourth proportional to 13,909.18, 20,853.30 and 4,543.60 is: 6,811.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.18 : 20,853.30 = 4,543.60 : x
  2. Step 2: Convert to fraction form
    13,909.18/20,853.30 = 4,543.60/x
  3. Step 3: Cross multiply
    13,909.18x = 20,853.30 × 4,543.60
  4. Step 4: Simplify right side
    13,909.18x = 94,749,053.88
  5. Step 5: Solve for x
    x = 94,749,053.88/13,909.18
  6. Step 6: Final answer
    x = 6,811.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.