Home / 12,480,013.80-18,720,020.70-7,086,580.20

Finding the Fourth Proportional to 12,480,013.80, 18,720,020.70 and 7,086,580.20

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Solution

The fourth proportional to 12,480,013.80, 18,720,020.70 and 7,086,580.20 is: 10,629,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480,013.80 : 18,720,020.70 = 7,086,580.20 : x
  2. Step 2: Convert to fraction form
    12,480,013.80/18,720,020.70 = 7,086,580.20/x
  3. Step 3: Cross multiply
    12,480,013.80x = 18,720,020.70 × 7,086,580.20
  4. Step 4: Simplify right side
    12,480,013.80x = 132,660,928,036,210.14
  5. Step 5: Solve for x
    x = 132,660,928,036,210.14/12,480,013.80
  6. Step 6: Final answer
    x = 10,629,870.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.