Home / 12,304.12-16,980.42-9,315.22

Finding the Fourth Proportional to 12,304.12, 16,980.42 and 9,315.22

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Solution

The fourth proportional to 12,304.12, 16,980.42 and 9,315.22 is: 12,855.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,304.12 : 16,980.42 = 9,315.22 : x
  2. Step 2: Convert to fraction form
    12,304.12/16,980.42 = 9,315.22/x
  3. Step 3: Cross multiply
    12,304.12x = 16,980.42 × 9,315.22
  4. Step 4: Simplify right side
    12,304.12x = 158,176,347.99
  5. Step 5: Solve for x
    x = 158,176,347.99/12,304.12
  6. Step 6: Final answer
    x = 12,855.56

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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.