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Finding the Fourth Proportional to 12,347.58, 17,039.69 and 6,971.19

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Solution

The fourth proportional to 12,347.58, 17,039.69 and 6,971.19 is: 9,620.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.58 : 17,039.69 = 6,971.19 : x
  2. Step 2: Convert to fraction form
    12,347.58/17,039.69 = 6,971.19/x
  3. Step 3: Cross multiply
    12,347.58x = 17,039.69 × 6,971.19
  4. Step 4: Simplify right side
    12,347.58x = 118,786,831.33
  5. Step 5: Solve for x
    x = 118,786,831.33/12,347.58
  6. Step 6: Final answer
    x = 9,620.25

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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.