Home / 28,160,653.08-42,258,749.68-11,986,578.40

Finding the Fourth Proportional to 28,160,653.08, 42,258,749.68 and 11,986,578.40

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Solution

The fourth proportional to 28,160,653.08, 42,258,749.68 and 11,986,578.40 is: 17,987,431.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160,653.08 : 42,258,749.68 = 11,986,578.40 : x
  2. Step 2: Convert to fraction form
    28,160,653.08/42,258,749.68 = 11,986,578.40/x
  3. Step 3: Cross multiply
    28,160,653.08x = 42,258,749.68 × 11,986,578.40
  4. Step 4: Simplify right side
    28,160,653.08x = 506,537,816,147,560.62
  5. Step 5: Solve for x
    x = 506,537,816,147,560.62/28,160,653.08
  6. Step 6: Final answer
    x = 17,987,431.42

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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.