Home / 30,808.10-42,515.15-16,660.96

Finding the Fourth Proportional to 30,808.10, 42,515.15 and 16,660.96

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Solution

The fourth proportional to 30,808.10, 42,515.15 and 16,660.96 is: 22,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.10 : 42,515.15 = 16,660.96 : x
  2. Step 2: Convert to fraction form
    30,808.10/42,515.15 = 16,660.96/x
  3. Step 3: Cross multiply
    30,808.10x = 42,515.15 × 16,660.96
  4. Step 4: Simplify right side
    30,808.10x = 708,343,023.95
  5. Step 5: Solve for x
    x = 708,343,023.95/30,808.10
  6. Step 6: Final answer
    x = 22,992.10

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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.