Home / 13,979.40-19,291.48-8,011.04

Finding the Fourth Proportional to 13,979.40, 19,291.48 and 8,011.04

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Solution

The fourth proportional to 13,979.40, 19,291.48 and 8,011.04 is: 11,055.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.40 : 19,291.48 = 8,011.04 : x
  2. Step 2: Convert to fraction form
    13,979.40/19,291.48 = 8,011.04/x
  3. Step 3: Cross multiply
    13,979.40x = 19,291.48 × 8,011.04
  4. Step 4: Simplify right side
    13,979.40x = 154,544,817.94
  5. Step 5: Solve for x
    x = 154,544,817.94/13,979.40
  6. Step 6: Final answer
    x = 11,055.18

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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.