Home / 13,291,355.81-18,342,087.42-7,179,784.31

Finding the Fourth Proportional to 13,291,355.81, 18,342,087.42 and 7,179,784.31

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Solution

The fourth proportional to 13,291,355.81, 18,342,087.42 and 7,179,784.31 is: 9,908,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,355.81 : 18,342,087.42 = 7,179,784.31 : x
  2. Step 2: Convert to fraction form
    13,291,355.81/18,342,087.42 = 7,179,784.31/x
  3. Step 3: Cross multiply
    13,291,355.81x = 18,342,087.42 × 7,179,784.31
  4. Step 4: Simplify right side
    13,291,355.81x = 131,692,231,543,543.78
  5. Step 5: Solve for x
    x = 131,692,231,543,543.78/13,291,355.81
  6. Step 6: Final answer
    x = 9,908,111.21

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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.