Home / 14,514.90-21,776.40-7,119.60

Finding the Fourth Proportional to 14,514.90, 21,776.40 and 7,119.60

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Solution

The fourth proportional to 14,514.90, 21,776.40 and 7,119.60 is: 10,681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,514.90 : 21,776.40 = 7,119.60 : x
  2. Step 2: Convert to fraction form
    14,514.90/21,776.40 = 7,119.60/x
  3. Step 3: Cross multiply
    14,514.90x = 21,776.40 × 7,119.60
  4. Step 4: Simplify right side
    14,514.90x = 155,039,257.44
  5. Step 5: Solve for x
    x = 155,039,257.44/14,514.90
  6. Step 6: Final answer
    x = 10,681.39

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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.