Home / 16,986.39-25,365.20-13,872.58

Finding the Fourth Proportional to 16,986.39, 25,365.20 and 13,872.58

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Solution

The fourth proportional to 16,986.39, 25,365.20 and 13,872.58 is: 20,715.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,986.39 : 25,365.20 = 13,872.58 : x
  2. Step 2: Convert to fraction form
    16,986.39/25,365.20 = 13,872.58/x
  3. Step 3: Cross multiply
    16,986.39x = 25,365.20 × 13,872.58
  4. Step 4: Simplify right side
    16,986.39x = 351,880,639.39
  5. Step 5: Solve for x
    x = 351,880,639.39/16,986.39
  6. Step 6: Final answer
    x = 20,715.45

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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.