Home / 20,434,125.91-28,205,927.02-12,176,778.45

Finding the Fourth Proportional to 20,434,125.91, 28,205,927.02 and 12,176,778.45

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Solution

The fourth proportional to 20,434,125.91, 28,205,927.02 and 12,176,778.45 is: 16,808,026.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434,125.91 : 28,205,927.02 = 12,176,778.45 : x
  2. Step 2: Convert to fraction form
    20,434,125.91/28,205,927.02 = 12,176,778.45/x
  3. Step 3: Cross multiply
    20,434,125.91x = 28,205,927.02 × 12,176,778.45
  4. Step 4: Simplify right side
    20,434,125.91x = 343,457,324,261,743.56
  5. Step 5: Solve for x
    x = 343,457,324,261,743.56/20,434,125.91
  6. Step 6: Final answer
    x = 16,808,026.23

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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.