Home / 13,771.61-20,656.69-8,075.74

Finding the Fourth Proportional to 13,771.61, 20,656.69 and 8,075.74

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Solution

The fourth proportional to 13,771.61, 20,656.69 and 8,075.74 is: 12,113.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.61 : 20,656.69 = 8,075.74 : x
  2. Step 2: Convert to fraction form
    13,771.61/20,656.69 = 8,075.74/x
  3. Step 3: Cross multiply
    13,771.61x = 20,656.69 × 8,075.74
  4. Step 4: Simplify right side
    13,771.61x = 166,818,057.70
  5. Step 5: Solve for x
    x = 166,818,057.70/13,771.61
  6. Step 6: Final answer
    x = 12,113.18

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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.