Home / 12,293,718.20-18,428,135.70-7,242,428.60

Finding the Fourth Proportional to 12,293,718.20, 18,428,135.70 and 7,242,428.60

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Solution

The fourth proportional to 12,293,718.20, 18,428,135.70 and 7,242,428.60 is: 10,856,313.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,293,718.20 : 18,428,135.70 = 7,242,428.60 : x
  2. Step 2: Convert to fraction form
    12,293,718.20/18,428,135.70 = 7,242,428.60/x
  3. Step 3: Cross multiply
    12,293,718.20x = 18,428,135.70 × 7,242,428.60
  4. Step 4: Simplify right side
    12,293,718.20x = 133,464,457,038,361
  5. Step 5: Solve for x
    x = 133,464,457,038,361/12,293,718.20
  6. Step 6: Final answer
    x = 10,856,313.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.