Home / 15,117.03-20,861.48-8,403.35

Finding the Fourth Proportional to 15,117.03, 20,861.48 and 8,403.35

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Solution

The fourth proportional to 15,117.03, 20,861.48 and 8,403.35 is: 11,596.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.03 : 20,861.48 = 8,403.35 : x
  2. Step 2: Convert to fraction form
    15,117.03/20,861.48 = 8,403.35/x
  3. Step 3: Cross multiply
    15,117.03x = 20,861.48 × 8,403.35
  4. Step 4: Simplify right side
    15,117.03x = 175,306,234.66
  5. Step 5: Solve for x
    x = 175,306,234.66/15,117.03
  6. Step 6: Final answer
    x = 11,596.61

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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.