Home / 16,861.20-25,291.80-16,688.40

Finding the Fourth Proportional to 16,861.20, 25,291.80 and 16,688.40

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Solution

The fourth proportional to 16,861.20, 25,291.80 and 16,688.40 is: 25,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,861.20 : 25,291.80 = 16,688.40 : x
  2. Step 2: Convert to fraction form
    16,861.20/25,291.80 = 16,688.40/x
  3. Step 3: Cross multiply
    16,861.20x = 25,291.80 × 16,688.40
  4. Step 4: Simplify right side
    16,861.20x = 422,079,675.12
  5. Step 5: Solve for x
    x = 422,079,675.12/16,861.20
  6. Step 6: Final answer
    x = 25,032.60

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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.