Home / 30,420.63-41,977.73-16,990.02

Finding the Fourth Proportional to 30,420.63, 41,977.73 and 16,990.02

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Solution

The fourth proportional to 30,420.63, 41,977.73 and 16,990.02 is: 23,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,420.63 : 41,977.73 = 16,990.02 : x
  2. Step 2: Convert to fraction form
    30,420.63/41,977.73 = 16,990.02/x
  3. Step 3: Cross multiply
    30,420.63x = 41,977.73 × 16,990.02
  4. Step 4: Simplify right side
    30,420.63x = 713,202,514.73
  5. Step 5: Solve for x
    x = 713,202,514.73/30,420.63
  6. Step 6: Final answer
    x = 23,444.70

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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.