Home / 13,979.21-19,290.99-8,014.40

Finding the Fourth Proportional to 13,979.21, 19,290.99 and 8,014.40

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Solution

The fourth proportional to 13,979.21, 19,290.99 and 8,014.40 is: 11,059.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.21 : 19,290.99 = 8,014.40 : x
  2. Step 2: Convert to fraction form
    13,979.21/19,290.99 = 8,014.40/x
  3. Step 3: Cross multiply
    13,979.21x = 19,290.99 × 8,014.40
  4. Step 4: Simplify right side
    13,979.21x = 154,605,710.26
  5. Step 5: Solve for x
    x = 154,605,710.26/13,979.21
  6. Step 6: Final answer
    x = 11,059.69

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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.