Home / 13,317,840.37-18,381,690.89-7,812,983.68

Finding the Fourth Proportional to 13,317,840.37, 18,381,690.89 and 7,812,983.68

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Solution

The fourth proportional to 13,317,840.37, 18,381,690.89 and 7,812,983.68 is: 10,783,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317,840.37 : 18,381,690.89 = 7,812,983.68 : x
  2. Step 2: Convert to fraction form
    13,317,840.37/18,381,690.89 = 7,812,983.68/x
  3. Step 3: Cross multiply
    13,317,840.37x = 18,381,690.89 × 7,812,983.68
  4. Step 4: Simplify right side
    13,317,840.37x = 143,615,850,878,654.25
  5. Step 5: Solve for x
    x = 143,615,850,878,654.25/13,317,840.37
  6. Step 6: Final answer
    x = 10,783,719.20

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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.