Home / 28,730,890.95-39,649,472.97-15,678,992.19

Finding the Fourth Proportional to 28,730,890.95, 39,649,472.97 and 15,678,992.19

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Solution

The fourth proportional to 28,730,890.95, 39,649,472.97 and 15,678,992.19 is: 21,637,469.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730,890.95 : 39,649,472.97 = 15,678,992.19 : x
  2. Step 2: Convert to fraction form
    28,730,890.95/39,649,472.97 = 15,678,992.19/x
  3. Step 3: Cross multiply
    28,730,890.95x = 39,649,472.97 × 15,678,992.19
  4. Step 4: Simplify right side
    28,730,890.95x = 621,663,777,034,246.12
  5. Step 5: Solve for x
    x = 621,663,777,034,246.12/28,730,890.95
  6. Step 6: Final answer
    x = 21,637,469.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.