Home / 13,979.20-19,297.20-9,270.40

Finding the Fourth Proportional to 13,979.20, 19,297.20 and 9,270.40

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Solution

The fourth proportional to 13,979.20, 19,297.20 and 9,270.40 is: 12,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.20 : 19,297.20 = 9,270.40 : x
  2. Step 2: Convert to fraction form
    13,979.20/19,297.20 = 9,270.40/x
  3. Step 3: Cross multiply
    13,979.20x = 19,297.20 × 9,270.40
  4. Step 4: Simplify right side
    13,979.20x = 178,892,762.88
  5. Step 5: Solve for x
    x = 178,892,762.88/13,979.20
  6. Step 6: Final answer
    x = 12,797.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.