Home / 30,421.29-41,977.23-16,990.83

Finding the Fourth Proportional to 30,421.29, 41,977.23 and 16,990.83

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Solution

The fourth proportional to 30,421.29, 41,977.23 and 16,990.83 is: 23,445.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.29 : 41,977.23 = 16,990.83 : x
  2. Step 2: Convert to fraction form
    30,421.29/41,977.23 = 16,990.83/x
  3. Step 3: Cross multiply
    30,421.29x = 41,977.23 × 16,990.83
  4. Step 4: Simplify right side
    30,421.29x = 713,227,978.80
  5. Step 5: Solve for x
    x = 713,227,978.80/30,421.29
  6. Step 6: Final answer
    x = 23,445.03

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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.