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Finding the Fourth Proportional to 10,955.70, 16,433.55 and 8,768.70

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Solution

The fourth proportional to 10,955.70, 16,433.55 and 8,768.70 is: 13,153.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.70 : 16,433.55 = 8,768.70 : x
  2. Step 2: Convert to fraction form
    10,955.70/16,433.55 = 8,768.70/x
  3. Step 3: Cross multiply
    10,955.70x = 16,433.55 × 8,768.70
  4. Step 4: Simplify right side
    10,955.70x = 144,100,869.89
  5. Step 5: Solve for x
    x = 144,100,869.89/10,955.70
  6. Step 6: Final answer
    x = 13,153.05

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1.5x scale

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.