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Finding the Fourth Proportional to 10,956.70, 16,435.05 and 8,769.70

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Solution

The fourth proportional to 10,956.70, 16,435.05 and 8,769.70 is: 13,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.70 : 16,435.05 = 8,769.70 : x
  2. Step 2: Convert to fraction form
    10,956.70/16,435.05 = 8,769.70/x
  3. Step 3: Cross multiply
    10,956.70x = 16,435.05 × 8,769.70
  4. Step 4: Simplify right side
    10,956.70x = 144,130,457.99
  5. Step 5: Solve for x
    x = 144,130,457.99/10,956.70
  6. Step 6: Final answer
    x = 13,154.55

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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.