Home / 31,008.21-42,790.73-16,860.93

Finding the Fourth Proportional to 31,008.21, 42,790.73 and 16,860.93

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Solution

The fourth proportional to 31,008.21, 42,790.73 and 16,860.93 is: 23,267.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,008.21 : 42,790.73 = 16,860.93 : x
  2. Step 2: Convert to fraction form
    31,008.21/42,790.73 = 16,860.93/x
  3. Step 3: Cross multiply
    31,008.21x = 42,790.73 × 16,860.93
  4. Step 4: Simplify right side
    31,008.21x = 721,491,503.18
  5. Step 5: Solve for x
    x = 721,491,503.18/31,008.21
  6. Step 6: Final answer
    x = 23,267.76

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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.