Home / 14,285.43-21,436.98-6,890.64

Finding the Fourth Proportional to 14,285.43, 21,436.98 and 6,890.64

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Solution

The fourth proportional to 14,285.43, 21,436.98 and 6,890.64 is: 10,340.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.43 : 21,436.98 = 6,890.64 : x
  2. Step 2: Convert to fraction form
    14,285.43/21,436.98 = 6,890.64/x
  3. Step 3: Cross multiply
    14,285.43x = 21,436.98 × 6,890.64
  4. Step 4: Simplify right side
    14,285.43x = 147,714,511.87
  5. Step 5: Solve for x
    x = 147,714,511.87/14,285.43
  6. Step 6: Final answer
    x = 10,340.22

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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.