Home / 12,095.40-16,690.50-6,789

Finding the Fourth Proportional to 12,095.40, 16,690.50 and 6,789

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Solution

The fourth proportional to 12,095.40, 16,690.50 and 6,789 is: 9,368.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,095.40 : 16,690.50 = 6,789 : x
  2. Step 2: Convert to fraction form
    12,095.40/16,690.50 = 6,789/x
  3. Step 3: Cross multiply
    12,095.40x = 16,690.50 × 6,789
  4. Step 4: Simplify right side
    12,095.40x = 113,311,804.50
  5. Step 5: Solve for x
    x = 113,311,804.50/12,095.40
  6. Step 6: Final answer
    x = 9,368.17

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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.