Home / 12,431.69-17,155.76-6,842.69

Finding the Fourth Proportional to 12,431.69, 17,155.76 and 6,842.69

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Solution

The fourth proportional to 12,431.69, 17,155.76 and 6,842.69 is: 9,442.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.69 : 17,155.76 = 6,842.69 : x
  2. Step 2: Convert to fraction form
    12,431.69/17,155.76 = 6,842.69/x
  3. Step 3: Cross multiply
    12,431.69x = 17,155.76 × 6,842.69
  4. Step 4: Simplify right side
    12,431.69x = 117,391,547.39
  5. Step 5: Solve for x
    x = 117,391,547.39/12,431.69
  6. Step 6: Final answer
    x = 9,442.93

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Half scale
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Double 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.