Home / 14,285.07-21,427.89-4,290.21

Finding the Fourth Proportional to 14,285.07, 21,427.89 and 4,290.21

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Solution

The fourth proportional to 14,285.07, 21,427.89 and 4,290.21 is: 6,435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.07 : 21,427.89 = 4,290.21 : x
  2. Step 2: Convert to fraction form
    14,285.07/21,427.89 = 4,290.21/x
  3. Step 3: Cross multiply
    14,285.07x = 21,427.89 × 4,290.21
  4. Step 4: Simplify right side
    14,285.07x = 91,930,147.96
  5. Step 5: Solve for x
    x = 91,930,147.96/14,285.07
  6. Step 6: Final answer
    x = 6,435.40

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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.