Home / 13,405.62-20,075.61-9,447.15

Finding the Fourth Proportional to 13,405.62, 20,075.61 and 9,447.15

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Solution

The fourth proportional to 13,405.62, 20,075.61 and 9,447.15 is: 14,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.62 : 20,075.61 = 9,447.15 : x
  2. Step 2: Convert to fraction form
    13,405.62/20,075.61 = 9,447.15/x
  3. Step 3: Cross multiply
    13,405.62x = 20,075.61 × 9,447.15
  4. Step 4: Simplify right side
    13,405.62x = 189,657,299.01
  5. Step 5: Solve for x
    x = 189,657,299.01/13,405.62
  6. Step 6: Final answer
    x = 14,147.60

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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.