Home / 18,870,139.80-28,305,209.70-18,551,275.20

Finding the Fourth Proportional to 18,870,139.80, 28,305,209.70 and 18,551,275.20

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Solution

The fourth proportional to 18,870,139.80, 28,305,209.70 and 18,551,275.20 is: 27,826,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870,139.80 : 28,305,209.70 = 18,551,275.20 : x
  2. Step 2: Convert to fraction form
    18,870,139.80/28,305,209.70 = 18,551,275.20/x
  3. Step 3: Cross multiply
    18,870,139.80x = 28,305,209.70 × 18,551,275.20
  4. Step 4: Simplify right side
    18,870,139.80x = 525,097,734,738,409.38
  5. Step 5: Solve for x
    x = 525,097,734,738,409.38/18,870,139.80
  6. Step 6: Final answer
    x = 27,826,912.80

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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.