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Finding the Fourth Proportional to 12,797.40, 19,212.30 and 11,925.30

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Solution

The fourth proportional to 12,797.40, 19,212.30 and 11,925.30 is: 17,903.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,797.40 : 19,212.30 = 11,925.30 : x
  2. Step 2: Convert to fraction form
    12,797.40/19,212.30 = 11,925.30/x
  3. Step 3: Cross multiply
    12,797.40x = 19,212.30 × 11,925.30
  4. Step 4: Simplify right side
    12,797.40x = 229,112,441.19
  5. Step 5: Solve for x
    x = 229,112,441.19/12,797.40
  6. Step 6: Final answer
    x = 17,903.05

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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.