Home / 15,005.06-20,705.92-8,290.62

Finding the Fourth Proportional to 15,005.06, 20,705.92 and 8,290.62

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Solution

The fourth proportional to 15,005.06, 20,705.92 and 8,290.62 is: 11,440.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,005.06 : 20,705.92 = 8,290.62 : x
  2. Step 2: Convert to fraction form
    15,005.06/20,705.92 = 8,290.62/x
  3. Step 3: Cross multiply
    15,005.06x = 20,705.92 × 8,290.62
  4. Step 4: Simplify right side
    15,005.06x = 171,664,841.98
  5. Step 5: Solve for x
    x = 171,664,841.98/15,005.06
  6. Step 6: Final answer
    x = 11,440.46

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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.