Home / 20,303.19-30,463.88-12,905.73

Finding the Fourth Proportional to 20,303.19, 30,463.88 and 12,905.73

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Solution

The fourth proportional to 20,303.19, 30,463.88 and 12,905.73 is: 19,364.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.19 : 30,463.88 = 12,905.73 : x
  2. Step 2: Convert to fraction form
    20,303.19/30,463.88 = 12,905.73/x
  3. Step 3: Cross multiply
    20,303.19x = 30,463.88 × 12,905.73
  4. Step 4: Simplify right side
    20,303.19x = 393,158,610.03
  5. Step 5: Solve for x
    x = 393,158,610.03/20,303.19
  6. Step 6: Final answer
    x = 19,364.38

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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.