Home / 11,299.89-15,591.81-6,518.72

Finding the Fourth Proportional to 11,299.89, 15,591.81 and 6,518.72

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Solution

The fourth proportional to 11,299.89, 15,591.81 and 6,518.72 is: 8,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,299.89 : 15,591.81 = 6,518.72 : x
  2. Step 2: Convert to fraction form
    11,299.89/15,591.81 = 6,518.72/x
  3. Step 3: Cross multiply
    11,299.89x = 15,591.81 × 6,518.72
  4. Step 4: Simplify right side
    11,299.89x = 101,638,565.72
  5. Step 5: Solve for x
    x = 101,638,565.72/11,299.89
  6. Step 6: Final answer
    x = 8,994.65

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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.