Home / 12,825.36-19,194.30-7,898.40

Finding the Fourth Proportional to 12,825.36, 19,194.30 and 7,898.40

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Solution

The fourth proportional to 12,825.36, 19,194.30 and 7,898.40 is: 11,820.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825.36 : 19,194.30 = 7,898.40 : x
  2. Step 2: Convert to fraction form
    12,825.36/19,194.30 = 7,898.40/x
  3. Step 3: Cross multiply
    12,825.36x = 19,194.30 × 7,898.40
  4. Step 4: Simplify right side
    12,825.36x = 151,604,259.12
  5. Step 5: Solve for x
    x = 151,604,259.12/12,825.36
  6. Step 6: Final answer
    x = 11,820.66

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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.