Home / 10,830.70-16,246.05-8,206.30

Finding the Fourth Proportional to 10,830.70, 16,246.05 and 8,206.30

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Solution

The fourth proportional to 10,830.70, 16,246.05 and 8,206.30 is: 12,309.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,830.70 : 16,246.05 = 8,206.30 : x
  2. Step 2: Convert to fraction form
    10,830.70/16,246.05 = 8,206.30/x
  3. Step 3: Cross multiply
    10,830.70x = 16,246.05 × 8,206.30
  4. Step 4: Simplify right side
    10,830.70x = 133,319,960.12
  5. Step 5: Solve for x
    x = 133,319,960.12/10,830.70
  6. Step 6: Final answer
    x = 12,309.45

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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.