Home / 12,429.28-18,643.74-3,069.40

Finding the Fourth Proportional to 12,429.28, 18,643.74 and 3,069.40

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Solution

The fourth proportional to 12,429.28, 18,643.74 and 3,069.40 is: 4,604.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.28 : 18,643.74 = 3,069.40 : x
  2. Step 2: Convert to fraction form
    12,429.28/18,643.74 = 3,069.40/x
  3. Step 3: Cross multiply
    12,429.28x = 18,643.74 × 3,069.40
  4. Step 4: Simplify right side
    12,429.28x = 57,225,095.56
  5. Step 5: Solve for x
    x = 57,225,095.56/12,429.28
  6. Step 6: Final answer
    x = 4,604.06

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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.