Home / 12,289.08-18,429.84-3,521.64

Finding the Fourth Proportional to 12,289.08, 18,429.84 and 3,521.64

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Solution

The fourth proportional to 12,289.08, 18,429.84 and 3,521.64 is: 5,281.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.08 : 18,429.84 = 3,521.64 : x
  2. Step 2: Convert to fraction form
    12,289.08/18,429.84 = 3,521.64/x
  3. Step 3: Cross multiply
    12,289.08x = 18,429.84 × 3,521.64
  4. Step 4: Simplify right side
    12,289.08x = 64,903,261.74
  5. Step 5: Solve for x
    x = 64,903,261.74/12,289.08
  6. Step 6: Final answer
    x = 5,281.38

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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.