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Finding the Fourth Proportional to 12,368.84, 17,068.74 and 6,779.48

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Solution

The fourth proportional to 12,368.84, 17,068.74 and 6,779.48 is: 9,355.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.84 : 17,068.74 = 6,779.48 : x
  2. Step 2: Convert to fraction form
    12,368.84/17,068.74 = 6,779.48/x
  3. Step 3: Cross multiply
    12,368.84x = 17,068.74 × 6,779.48
  4. Step 4: Simplify right side
    12,368.84x = 115,717,181.46
  5. Step 5: Solve for x
    x = 115,717,181.46/12,368.84
  6. Step 6: Final answer
    x = 9,355.54

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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.