Home / 12,989,572.75-17,925,657.92-7,028,979.58

Finding the Fourth Proportional to 12,989,572.75, 17,925,657.92 and 7,028,979.58

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Solution

The fourth proportional to 12,989,572.75, 17,925,657.92 and 7,028,979.58 is: 9,700,017.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,572.75 : 17,925,657.92 = 7,028,979.58 : x
  2. Step 2: Convert to fraction form
    12,989,572.75/17,925,657.92 = 7,028,979.58/x
  3. Step 3: Cross multiply
    12,989,572.75x = 17,925,657.92 × 7,028,979.58
  4. Step 4: Simplify right side
    12,989,572.75x = 125,999,083,477,745.28
  5. Step 5: Solve for x
    x = 125,999,083,477,745.28/12,989,572.75
  6. Step 6: Final answer
    x = 9,700,017.54

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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.