Home / 16,872.39-23,283.79-9,319.21

Finding the Fourth Proportional to 16,872.39, 23,283.79 and 9,319.21

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Solution

The fourth proportional to 16,872.39, 23,283.79 and 9,319.21 is: 12,860.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,872.39 : 23,283.79 = 9,319.21 : x
  2. Step 2: Convert to fraction form
    16,872.39/23,283.79 = 9,319.21/x
  3. Step 3: Cross multiply
    16,872.39x = 23,283.79 × 9,319.21
  4. Step 4: Simplify right side
    16,872.39x = 216,986,447.10
  5. Step 5: Solve for x
    x = 216,986,447.10/16,872.39
  6. Step 6: Final answer
    x = 12,860.45

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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.