Home / 12,421.60-18,626.55-3,654.77

Finding the Fourth Proportional to 12,421.60, 18,626.55 and 3,654.77

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Solution

The fourth proportional to 12,421.60, 18,626.55 and 3,654.77 is: 5,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.60 : 18,626.55 = 3,654.77 : x
  2. Step 2: Convert to fraction form
    12,421.60/18,626.55 = 3,654.77/x
  3. Step 3: Cross multiply
    12,421.60x = 18,626.55 × 3,654.77
  4. Step 4: Simplify right side
    12,421.60x = 68,075,663.01
  5. Step 5: Solve for x
    x = 68,075,663.01/12,421.60
  6. Step 6: Final answer
    x = 5,480.43

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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.