Home / 10,715.08-14,790.70-8,722.18

Finding the Fourth Proportional to 10,715.08, 14,790.70 and 8,722.18

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Solution

The fourth proportional to 10,715.08, 14,790.70 and 8,722.18 is: 12,039.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,715.08 : 14,790.70 = 8,722.18 : x
  2. Step 2: Convert to fraction form
    10,715.08/14,790.70 = 8,722.18/x
  3. Step 3: Cross multiply
    10,715.08x = 14,790.70 × 8,722.18
  4. Step 4: Simplify right side
    10,715.08x = 129,007,147.73
  5. Step 5: Solve for x
    x = 129,007,147.73/10,715.08
  6. Step 6: Final answer
    x = 12,039.77

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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.