Home / 12,989,571.75-17,925,656.54-7,028,978.58

Finding the Fourth Proportional to 12,989,571.75, 17,925,656.54 and 7,028,978.58

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Solution

The fourth proportional to 12,989,571.75, 17,925,656.54 and 7,028,978.58 is: 9,700,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,571.75 : 17,925,656.54 = 7,028,978.58 : x
  2. Step 2: Convert to fraction form
    12,989,571.75/17,925,656.54 = 7,028,978.58/x
  3. Step 3: Cross multiply
    12,989,571.75x = 17,925,656.54 × 7,028,978.58
  4. Step 4: Simplify right side
    12,989,571.75x = 125,999,055,816,952.02
  5. Step 5: Solve for x
    x = 125,999,055,816,952.02/12,989,571.75
  6. Step 6: Final answer
    x = 9,700,016.15

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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.