Home / 13,319.16-18,378.98-7,350.45

Finding the Fourth Proportional to 13,319.16, 18,378.98 and 7,350.45

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Solution

The fourth proportional to 13,319.16, 18,378.98 and 7,350.45 is: 10,142.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.16 : 18,378.98 = 7,350.45 : x
  2. Step 2: Convert to fraction form
    13,319.16/18,378.98 = 7,350.45/x
  3. Step 3: Cross multiply
    13,319.16x = 18,378.98 × 7,350.45
  4. Step 4: Simplify right side
    13,319.16x = 135,093,644.89
  5. Step 5: Solve for x
    x = 135,093,644.89/13,319.16
  6. Step 6: Final answer
    x = 10,142.81

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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.