Home / 13,143,774.48-18,139,105.17-7,918,427.56

Finding the Fourth Proportional to 13,143,774.48, 18,139,105.17 and 7,918,427.56

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Solution

The fourth proportional to 13,143,774.48, 18,139,105.17 and 7,918,427.56 is: 10,927,849.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143,774.48 : 18,139,105.17 = 7,918,427.56 : x
  2. Step 2: Convert to fraction form
    13,143,774.48/18,139,105.17 = 7,918,427.56/x
  3. Step 3: Cross multiply
    13,143,774.48x = 18,139,105.17 × 7,918,427.56
  4. Step 4: Simplify right side
    13,143,774.48x = 143,633,190,291,866.50
  5. Step 5: Solve for x
    x = 143,633,190,291,866.50/13,143,774.48
  6. Step 6: Final answer
    x = 10,927,849.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.