Home / 15,927.44-21,980.31-8,854.34

Finding the Fourth Proportional to 15,927.44, 21,980.31 and 8,854.34

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Solution

The fourth proportional to 15,927.44, 21,980.31 and 8,854.34 is: 12,219.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,927.44 : 21,980.31 = 8,854.34 : x
  2. Step 2: Convert to fraction form
    15,927.44/21,980.31 = 8,854.34/x
  3. Step 3: Cross multiply
    15,927.44x = 21,980.31 × 8,854.34
  4. Step 4: Simplify right side
    15,927.44x = 194,621,138.05
  5. Step 5: Solve for x
    x = 194,621,138.05/15,927.44
  6. Step 6: Final answer
    x = 12,219.24

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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.