Home / 13,374.80-20,065.40-5,579.28

Finding the Fourth Proportional to 13,374.80, 20,065.40 and 5,579.28

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Solution

The fourth proportional to 13,374.80, 20,065.40 and 5,579.28 is: 8,370.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,374.80 : 20,065.40 = 5,579.28 : x
  2. Step 2: Convert to fraction form
    13,374.80/20,065.40 = 5,579.28/x
  3. Step 3: Cross multiply
    13,374.80x = 20,065.40 × 5,579.28
  4. Step 4: Simplify right side
    13,374.80x = 111,950,484.91
  5. Step 5: Solve for x
    x = 111,950,484.91/13,374.80
  6. Step 6: Final answer
    x = 8,370.25

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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.