Home / 15,427.96-21,290.61-8,354.41

Finding the Fourth Proportional to 15,427.96, 21,290.61 and 8,354.41

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Solution

The fourth proportional to 15,427.96, 21,290.61 and 8,354.41 is: 11,529.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.96 : 21,290.61 = 8,354.41 : x
  2. Step 2: Convert to fraction form
    15,427.96/21,290.61 = 8,354.41/x
  3. Step 3: Cross multiply
    15,427.96x = 21,290.61 × 8,354.41
  4. Step 4: Simplify right side
    15,427.96x = 177,870,485.09
  5. Step 5: Solve for x
    x = 177,870,485.09/15,427.96
  6. Step 6: Final answer
    x = 11,529.10

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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.