Home / 21,019.56-31,529.26-6,980.64

Finding the Fourth Proportional to 21,019.56, 31,529.26 and 6,980.64

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Solution

The fourth proportional to 21,019.56, 31,529.26 and 6,980.64 is: 10,470.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.56 : 31,529.26 = 6,980.64 : x
  2. Step 2: Convert to fraction form
    21,019.56/31,529.26 = 6,980.64/x
  3. Step 3: Cross multiply
    21,019.56x = 31,529.26 × 6,980.64
  4. Step 4: Simplify right side
    21,019.56x = 220,094,413.53
  5. Step 5: Solve for x
    x = 220,094,413.53/21,019.56
  6. Step 6: Final answer
    x = 10,470.93

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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.