Home / 13,210.55-18,232.42-8,176.39

Finding the Fourth Proportional to 13,210.55, 18,232.42 and 8,176.39

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Solution

The fourth proportional to 13,210.55, 18,232.42 and 8,176.39 is: 11,284.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.55 : 18,232.42 = 8,176.39 : x
  2. Step 2: Convert to fraction form
    13,210.55/18,232.42 = 8,176.39/x
  3. Step 3: Cross multiply
    13,210.55x = 18,232.42 × 8,176.39
  4. Step 4: Simplify right side
    13,210.55x = 149,075,376.56
  5. Step 5: Solve for x
    x = 149,075,376.56/13,210.55
  6. Step 6: Final answer
    x = 11,284.57

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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.