Home / 12,999.18-17,938.87-7,030.85

Finding the Fourth Proportional to 12,999.18, 17,938.87 and 7,030.85

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Solution

The fourth proportional to 12,999.18, 17,938.87 and 7,030.85 is: 9,702.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.18 : 17,938.87 = 7,030.85 : x
  2. Step 2: Convert to fraction form
    12,999.18/17,938.87 = 7,030.85/x
  3. Step 3: Cross multiply
    12,999.18x = 17,938.87 × 7,030.85
  4. Step 4: Simplify right side
    12,999.18x = 126,125,504.14
  5. Step 5: Solve for x
    x = 126,125,504.14/12,999.18
  6. Step 6: Final answer
    x = 9,702.57

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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.