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Finding the Fourth Proportional to 10,955.76, 15,118.95 and 5,919.98

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Solution

The fourth proportional to 10,955.76, 15,118.95 and 5,919.98 is: 8,169.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.76 : 15,118.95 = 5,919.98 : x
  2. Step 2: Convert to fraction form
    10,955.76/15,118.95 = 5,919.98/x
  3. Step 3: Cross multiply
    10,955.76x = 15,118.95 × 5,919.98
  4. Step 4: Simplify right side
    10,955.76x = 89,503,852.02
  5. Step 5: Solve for x
    x = 89,503,852.02/10,955.76
  6. Step 6: Final answer
    x = 8,169.57

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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.