Home / 12,808.60-19,183.35-12,365.32

Finding the Fourth Proportional to 12,808.60, 19,183.35 and 12,365.32

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Solution

The fourth proportional to 12,808.60, 19,183.35 and 12,365.32 is: 18,519.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.60 : 19,183.35 = 12,365.32 : x
  2. Step 2: Convert to fraction form
    12,808.60/19,183.35 = 12,365.32/x
  3. Step 3: Cross multiply
    12,808.60x = 19,183.35 × 12,365.32
  4. Step 4: Simplify right side
    12,808.60x = 237,208,261.42
  5. Step 5: Solve for x
    x = 237,208,261.42/12,808.60
  6. Step 6: Final answer
    x = 18,519.45

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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.