Home / 12,987,293.09-17,922,485.45-7,186,319.33

Finding the Fourth Proportional to 12,987,293.09, 17,922,485.45 and 7,186,319.33

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Solution

The fourth proportional to 12,987,293.09, 17,922,485.45 and 7,186,319.33 is: 9,917,132.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987,293.09 : 17,922,485.45 = 7,186,319.33 : x
  2. Step 2: Convert to fraction form
    12,987,293.09/17,922,485.45 = 7,186,319.33/x
  3. Step 3: Cross multiply
    12,987,293.09x = 17,922,485.45 × 7,186,319.33
  4. Step 4: Simplify right side
    12,987,293.09x = 128,796,703,559,332.12
  5. Step 5: Solve for x
    x = 128,796,703,559,332.12/12,987,293.09
  6. Step 6: Final answer
    x = 9,917,132.29

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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.