Home / 12,368.64-17,068.96-6,779.36

Finding the Fourth Proportional to 12,368.64, 17,068.96 and 6,779.36

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Solution

The fourth proportional to 12,368.64, 17,068.96 and 6,779.36 is: 9,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.64 : 17,068.96 = 6,779.36 : x
  2. Step 2: Convert to fraction form
    12,368.64/17,068.96 = 6,779.36/x
  3. Step 3: Cross multiply
    12,368.64x = 17,068.96 × 6,779.36
  4. Step 4: Simplify right side
    12,368.64x = 115,716,624.67
  5. Step 5: Solve for x
    x = 115,716,624.67/12,368.64
  6. Step 6: Final answer
    x = 9,355.65

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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.