Home / 15,055.41-20,779.07-8,680.85

Finding the Fourth Proportional to 15,055.41, 20,779.07 and 8,680.85

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Solution

The fourth proportional to 15,055.41, 20,779.07 and 8,680.85 is: 11,981.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,055.41 : 20,779.07 = 8,680.85 : x
  2. Step 2: Convert to fraction form
    15,055.41/20,779.07 = 8,680.85/x
  3. Step 3: Cross multiply
    15,055.41x = 20,779.07 × 8,680.85
  4. Step 4: Simplify right side
    15,055.41x = 180,379,842.51
  5. Step 5: Solve for x
    x = 180,379,842.51/15,055.41
  6. Step 6: Final answer
    x = 11,981.06

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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.