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Finding the Fourth Proportional to 12,368.63, 17,068.71 and 6,779.63

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Solution

The fourth proportional to 12,368.63, 17,068.71 and 6,779.63 is: 9,355.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.63 : 17,068.71 = 6,779.63 : x
  2. Step 2: Convert to fraction form
    12,368.63/17,068.71 = 6,779.63/x
  3. Step 3: Cross multiply
    12,368.63x = 17,068.71 × 6,779.63
  4. Step 4: Simplify right side
    12,368.63x = 115,719,538.38
  5. Step 5: Solve for x
    x = 115,719,538.38/12,368.63
  6. Step 6: Final answer
    x = 9,355.89

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Half scale
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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.