Home / 20,283.83-28,000.31-12,328.62

Finding the Fourth Proportional to 20,283.83, 28,000.31 and 12,328.62

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Solution

The fourth proportional to 20,283.83, 28,000.31 and 12,328.62 is: 17,018.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.83 : 28,000.31 = 12,328.62 : x
  2. Step 2: Convert to fraction form
    20,283.83/28,000.31 = 12,328.62/x
  3. Step 3: Cross multiply
    20,283.83x = 28,000.31 × 12,328.62
  4. Step 4: Simplify right side
    20,283.83x = 345,205,181.87
  5. Step 5: Solve for x
    x = 345,205,181.87/20,283.83
  6. Step 6: Final answer
    x = 17,018.74

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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.