Home / 12,280.55-18,406.40-5,692.91

Finding the Fourth Proportional to 12,280.55, 18,406.40 and 5,692.91

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Solution

The fourth proportional to 12,280.55, 18,406.40 and 5,692.91 is: 8,532.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.55 : 18,406.40 = 5,692.91 : x
  2. Step 2: Convert to fraction form
    12,280.55/18,406.40 = 5,692.91/x
  3. Step 3: Cross multiply
    12,280.55x = 18,406.40 × 5,692.91
  4. Step 4: Simplify right side
    12,280.55x = 104,785,858.13
  5. Step 5: Solve for x
    x = 104,785,858.13/12,280.55
  6. Step 6: Final answer
    x = 8,532.67

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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.