Home / 15,514.36-21,410.40-8,891.64

Finding the Fourth Proportional to 15,514.36, 21,410.40 and 8,891.64

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Solution

The fourth proportional to 15,514.36, 21,410.40 and 8,891.64 is: 12,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.36 : 21,410.40 = 8,891.64 : x
  2. Step 2: Convert to fraction form
    15,514.36/21,410.40 = 8,891.64/x
  3. Step 3: Cross multiply
    15,514.36x = 21,410.40 × 8,891.64
  4. Step 4: Simplify right side
    15,514.36x = 190,373,569.06
  5. Step 5: Solve for x
    x = 190,373,569.06/15,514.36
  6. Step 6: Final answer
    x = 12,270.80

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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.