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Finding the Fourth Proportional to 12,999.06, 17,938.68 and 7,030.68

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Solution

The fourth proportional to 12,999.06, 17,938.68 and 7,030.68 is: 9,702.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.06 : 17,938.68 = 7,030.68 : x
  2. Step 2: Convert to fraction form
    12,999.06/17,938.68 = 7,030.68/x
  3. Step 3: Cross multiply
    12,999.06x = 17,938.68 × 7,030.68
  4. Step 4: Simplify right side
    12,999.06x = 126,121,118.70
  5. Step 5: Solve for x
    x = 126,121,118.70/12,999.06
  6. Step 6: Final answer
    x = 9,702.33

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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.