Home / 12,226.41-16,870.79-7,187.67

Finding the Fourth Proportional to 12,226.41, 16,870.79 and 7,187.67

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Solution

The fourth proportional to 12,226.41, 16,870.79 and 7,187.67 is: 9,918.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.41 : 16,870.79 = 7,187.67 : x
  2. Step 2: Convert to fraction form
    12,226.41/16,870.79 = 7,187.67/x
  3. Step 3: Cross multiply
    12,226.41x = 16,870.79 × 7,187.67
  4. Step 4: Simplify right side
    12,226.41x = 121,261,689.13
  5. Step 5: Solve for x
    x = 121,261,689.13/12,226.41
  6. Step 6: Final answer
    x = 9,918.01

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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.