Home / 28,990,992.87-43,391,862.14-21,312,604.89

Finding the Fourth Proportional to 28,990,992.87, 43,391,862.14 and 21,312,604.89

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Solution

The fourth proportional to 28,990,992.87, 43,391,862.14 and 21,312,604.89 is: 31,899,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990,992.87 : 43,391,862.14 = 21,312,604.89 : x
  2. Step 2: Convert to fraction form
    28,990,992.87/43,391,862.14 = 21,312,604.89/x
  3. Step 3: Cross multiply
    28,990,992.87x = 43,391,862.14 × 21,312,604.89
  4. Step 4: Simplify right side
    28,990,992.87x = 924,793,613,124,606.88
  5. Step 5: Solve for x
    x = 924,793,613,124,606.88/28,990,992.87
  6. Step 6: Final answer
    x = 31,899,342.57

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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.