Home / 20,970.35-28,923.93-12,014.58

Finding the Fourth Proportional to 20,970.35, 28,923.93 and 12,014.58

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Solution

The fourth proportional to 20,970.35, 28,923.93 and 12,014.58 is: 16,571.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.35 : 28,923.93 = 12,014.58 : x
  2. Step 2: Convert to fraction form
    20,970.35/28,923.93 = 12,014.58/x
  3. Step 3: Cross multiply
    20,970.35x = 28,923.93 × 12,014.58
  4. Step 4: Simplify right side
    20,970.35x = 347,508,870.90
  5. Step 5: Solve for x
    x = 347,508,870.90/20,970.35
  6. Step 6: Final answer
    x = 16,571.44

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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.