Home / 16,989.90-25,370.42-13,876.08

Finding the Fourth Proportional to 16,989.90, 25,370.42 and 13,876.08

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Solution

The fourth proportional to 16,989.90, 25,370.42 and 13,876.08 is: 20,720.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,989.90 : 25,370.42 = 13,876.08 : x
  2. Step 2: Convert to fraction form
    16,989.90/25,370.42 = 13,876.08/x
  3. Step 3: Cross multiply
    16,989.90x = 25,370.42 × 13,876.08
  4. Step 4: Simplify right side
    16,989.90x = 352,041,977.55
  5. Step 5: Solve for x
    x = 352,041,977.55/16,989.90
  6. Step 6: Final answer
    x = 20,720.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.