Home / 13,999.42-20,980.23-7,657.93

Finding the Fourth Proportional to 13,999.42, 20,980.23 and 7,657.93

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Solution

The fourth proportional to 13,999.42, 20,980.23 and 7,657.93 is: 11,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.42 : 20,980.23 = 7,657.93 : x
  2. Step 2: Convert to fraction form
    13,999.42/20,980.23 = 7,657.93/x
  3. Step 3: Cross multiply
    13,999.42x = 20,980.23 × 7,657.93
  4. Step 4: Simplify right side
    13,999.42x = 160,665,132.72
  5. Step 5: Solve for x
    x = 160,665,132.72/13,999.42
  6. Step 6: Final answer
    x = 11,476.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.