Home / 11,378.49-15,697.98-8,401.47

Finding the Fourth Proportional to 11,378.49, 15,697.98 and 8,401.47

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Solution

The fourth proportional to 11,378.49, 15,697.98 and 8,401.47 is: 11,590.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.49 : 15,697.98 = 8,401.47 : x
  2. Step 2: Convert to fraction form
    11,378.49/15,697.98 = 8,401.47/x
  3. Step 3: Cross multiply
    11,378.49x = 15,697.98 × 8,401.47
  4. Step 4: Simplify right side
    11,378.49x = 131,886,108.03
  5. Step 5: Solve for x
    x = 131,886,108.03/11,378.49
  6. Step 6: Final answer
    x = 11,590.83

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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.