Home / 13,143,771.73-18,139,101.38-7,918,424.81

Finding the Fourth Proportional to 13,143,771.73, 18,139,101.38 and 7,918,424.81

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Solution

The fourth proportional to 13,143,771.73, 18,139,101.38 and 7,918,424.81 is: 10,927,845.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143,771.73 : 18,139,101.38 = 7,918,424.81 : x
  2. Step 2: Convert to fraction form
    13,143,771.73/18,139,101.38 = 7,918,424.81/x
  3. Step 3: Cross multiply
    13,143,771.73x = 18,139,101.38 × 7,918,424.81
  4. Step 4: Simplify right side
    13,143,771.73x = 143,633,110,327,597.78
  5. Step 5: Solve for x
    x = 143,633,110,327,597.78/13,143,771.73
  6. Step 6: Final answer
    x = 10,927,845.77

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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.