Home / 13,930.14-19,218.31-8,894.59

Finding the Fourth Proportional to 13,930.14, 19,218.31 and 8,894.59

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Solution

The fourth proportional to 13,930.14, 19,218.31 and 8,894.59 is: 12,271.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.14 : 19,218.31 = 8,894.59 : x
  2. Step 2: Convert to fraction form
    13,930.14/19,218.31 = 8,894.59/x
  3. Step 3: Cross multiply
    13,930.14x = 19,218.31 × 8,894.59
  4. Step 4: Simplify right side
    13,930.14x = 170,938,987.94
  5. Step 5: Solve for x
    x = 170,938,987.94/13,930.14
  6. Step 6: Final answer
    x = 12,271.16

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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.