Home / 20,714.78-28,586.59-11,283.35

Finding the Fourth Proportional to 20,714.78, 28,586.59 and 11,283.35

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Solution

The fourth proportional to 20,714.78, 28,586.59 and 11,283.35 is: 15,571.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.78 : 28,586.59 = 11,283.35 : x
  2. Step 2: Convert to fraction form
    20,714.78/28,586.59 = 11,283.35/x
  3. Step 3: Cross multiply
    20,714.78x = 28,586.59 × 11,283.35
  4. Step 4: Simplify right side
    20,714.78x = 322,552,329.14
  5. Step 5: Solve for x
    x = 322,552,329.14/20,714.78
  6. Step 6: Final answer
    x = 15,571.12

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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.