Home / 13,317.70-18,379.26-7,349.34

Finding the Fourth Proportional to 13,317.70, 18,379.26 and 7,349.34

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Solution

The fourth proportional to 13,317.70, 18,379.26 and 7,349.34 is: 10,142.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.70 : 18,379.26 = 7,349.34 : x
  2. Step 2: Convert to fraction form
    13,317.70/18,379.26 = 7,349.34/x
  3. Step 3: Cross multiply
    13,317.70x = 18,379.26 × 7,349.34
  4. Step 4: Simplify right side
    13,317.70x = 135,075,430.69
  5. Step 5: Solve for x
    x = 135,075,430.69/13,317.70
  6. Step 6: Final answer
    x = 10,142.55

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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.