Home / 18,620,403.12-25,695,752.85-10,780,245.72

Finding the Fourth Proportional to 18,620,403.12, 25,695,752.85 and 10,780,245.72

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Solution

The fourth proportional to 18,620,403.12, 25,695,752.85 and 10,780,245.72 is: 14,876,505.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620,403.12 : 25,695,752.85 = 10,780,245.72 : x
  2. Step 2: Convert to fraction form
    18,620,403.12/25,695,752.85 = 10,780,245.72/x
  3. Step 3: Cross multiply
    18,620,403.12x = 25,695,752.85 × 10,780,245.72
  4. Step 4: Simplify right side
    18,620,403.12x = 277,006,529,683,390.34
  5. Step 5: Solve for x
    x = 277,006,529,683,390.34/18,620,403.12
  6. Step 6: Final answer
    x = 14,876,505.51

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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.