Home / 28,920.30-43,358.85-12,266.70

Finding the Fourth Proportional to 28,920.30, 43,358.85 and 12,266.70

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Solution

The fourth proportional to 28,920.30, 43,358.85 and 12,266.70 is: 18,390.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.30 : 43,358.85 = 12,266.70 : x
  2. Step 2: Convert to fraction form
    28,920.30/43,358.85 = 12,266.70/x
  3. Step 3: Cross multiply
    28,920.30x = 43,358.85 × 12,266.70
  4. Step 4: Simplify right side
    28,920.30x = 531,870,005.30
  5. Step 5: Solve for x
    x = 531,870,005.30/28,920.30
  6. Step 6: Final answer
    x = 18,390.89

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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.