Home / 13,438,318.21-18,546,453.53-7,637,971.86

Finding the Fourth Proportional to 13,438,318.21, 18,546,453.53 and 7,637,971.86

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Solution

The fourth proportional to 13,438,318.21, 18,546,453.53 and 7,637,971.86 is: 10,541,296.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438,318.21 : 18,546,453.53 = 7,637,971.86 : x
  2. Step 2: Convert to fraction form
    13,438,318.21/18,546,453.53 = 7,637,971.86/x
  3. Step 3: Cross multiply
    13,438,318.21x = 18,546,453.53 × 7,637,971.86
  4. Step 4: Simplify right side
    13,438,318.21x = 141,657,290,155,390.19
  5. Step 5: Solve for x
    x = 141,657,290,155,390.19/13,438,318.21
  6. Step 6: Final answer
    x = 10,541,296.01

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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.