Home / 28,990,930.56-43,391,769.12-21,312,542.76

Finding the Fourth Proportional to 28,990,930.56, 43,391,769.12 and 21,312,542.76

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Solution

The fourth proportional to 28,990,930.56, 43,391,769.12 and 21,312,542.76 is: 31,899,249.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990,930.56 : 43,391,769.12 = 21,312,542.76 : x
  2. Step 2: Convert to fraction form
    28,990,930.56/43,391,769.12 = 21,312,542.76/x
  3. Step 3: Cross multiply
    28,990,930.56x = 43,391,769.12 × 21,312,542.76
  4. Step 4: Simplify right side
    28,990,930.56x = 924,788,934,802,047.62
  5. Step 5: Solve for x
    x = 924,788,934,802,047.62/28,990,930.56
  6. Step 6: Final answer
    x = 31,899,249.76

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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.