Home / 12,085.32-16,678.40-6,779.72

Finding the Fourth Proportional to 12,085.32, 16,678.40 and 6,779.72

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Solution

The fourth proportional to 12,085.32, 16,678.40 and 6,779.72 is: 9,356.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.32 : 16,678.40 = 6,779.72 : x
  2. Step 2: Convert to fraction form
    12,085.32/16,678.40 = 6,779.72/x
  3. Step 3: Cross multiply
    12,085.32x = 16,678.40 × 6,779.72
  4. Step 4: Simplify right side
    12,085.32x = 113,074,882.05
  5. Step 5: Solve for x
    x = 113,074,882.05/12,085.32
  6. Step 6: Final answer
    x = 9,356.38

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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.