Home / 18,686,918.40-28,025,128.80-5,911,339.20

Finding the Fourth Proportional to 18,686,918.40, 28,025,128.80 and 5,911,339.20

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Solution

The fourth proportional to 18,686,918.40, 28,025,128.80 and 5,911,339.20 is: 8,865,348.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,918.40 : 28,025,128.80 = 5,911,339.20 : x
  2. Step 2: Convert to fraction form
    18,686,918.40/28,025,128.80 = 5,911,339.20/x
  3. Step 3: Cross multiply
    18,686,918.40x = 28,025,128.80 × 5,911,339.20
  4. Step 4: Simplify right side
    18,686,918.40x = 165,666,042,460,488.97
  5. Step 5: Solve for x
    x = 165,666,042,460,488.97/18,686,918.40
  6. Step 6: Final answer
    x = 8,865,348.42

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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.