Home / 9,828.90-13,563.42-5,579.70

Finding the Fourth Proportional to 9,828.90, 13,563.42 and 5,579.70

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Solution

The fourth proportional to 9,828.90, 13,563.42 and 5,579.70 is: 7,699.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,828.90 : 13,563.42 = 5,579.70 : x
  2. Step 2: Convert to fraction form
    9,828.90/13,563.42 = 5,579.70/x
  3. Step 3: Cross multiply
    9,828.90x = 13,563.42 × 5,579.70
  4. Step 4: Simplify right side
    9,828.90x = 75,679,814.57
  5. Step 5: Solve for x
    x = 75,679,814.57/9,828.90
  6. Step 6: Final answer
    x = 7,699.72

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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.