Home / 20,878,124.45-28,811,752.76-11,587,097.21

Finding the Fourth Proportional to 20,878,124.45, 28,811,752.76 and 11,587,097.21

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Solution

The fourth proportional to 20,878,124.45, 28,811,752.76 and 11,587,097.21 is: 15,990,161.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878,124.45 : 28,811,752.76 = 11,587,097.21 : x
  2. Step 2: Convert to fraction form
    20,878,124.45/28,811,752.76 = 11,587,097.21/x
  3. Step 3: Cross multiply
    20,878,124.45x = 28,811,752.76 × 11,587,097.21
  4. Step 4: Simplify right side
    20,878,124.45x = 333,844,579,905,514.75
  5. Step 5: Solve for x
    x = 333,844,579,905,514.75/20,878,124.45
  6. Step 6: Final answer
    x = 15,990,161.41

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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.