Home / 13,317.88-19,976.03-4,997.20

Finding the Fourth Proportional to 13,317.88, 19,976.03 and 4,997.20

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Solution

The fourth proportional to 13,317.88, 19,976.03 and 4,997.20 is: 7,495.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.88 : 19,976.03 = 4,997.20 : x
  2. Step 2: Convert to fraction form
    13,317.88/19,976.03 = 4,997.20/x
  3. Step 3: Cross multiply
    13,317.88x = 19,976.03 × 4,997.20
  4. Step 4: Simplify right side
    13,317.88x = 99,824,217.12
  5. Step 5: Solve for x
    x = 99,824,217.12/13,317.88
  6. Step 6: Final answer
    x = 7,495.50

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Half scale
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Double scale
Find fourth proportional to 13,318.88, 19,977.53 and 4,998.20
Similar ratio
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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.