Home / 12,945.40-17,861.56-9,402.44

Finding the Fourth Proportional to 12,945.40, 17,861.56 and 9,402.44

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Solution

The fourth proportional to 12,945.40, 17,861.56 and 9,402.44 is: 12,973.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.40 : 17,861.56 = 9,402.44 : x
  2. Step 2: Convert to fraction form
    12,945.40/17,861.56 = 9,402.44/x
  3. Step 3: Cross multiply
    12,945.40x = 17,861.56 × 9,402.44
  4. Step 4: Simplify right side
    12,945.40x = 167,942,246.21
  5. Step 5: Solve for x
    x = 167,942,246.21/12,945.40
  6. Step 6: Final answer
    x = 12,973.12

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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.