Home / 20,885,401.74-28,823,678.20-12,186,376.86

Finding the Fourth Proportional to 20,885,401.74, 28,823,678.20 and 12,186,376.86

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Solution

The fourth proportional to 20,885,401.74, 28,823,678.20 and 12,186,376.86 is: 16,818,264.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,401.74 : 28,823,678.20 = 12,186,376.86 : x
  2. Step 2: Convert to fraction form
    20,885,401.74/28,823,678.20 = 12,186,376.86/x
  3. Step 3: Cross multiply
    20,885,401.74x = 28,823,678.20 × 12,186,376.86
  4. Step 4: Simplify right side
    20,885,401.74x = 351,256,205,036,566.44
  5. Step 5: Solve for x
    x = 351,256,205,036,566.44/20,885,401.74
  6. Step 6: Final answer
    x = 16,818,264.23

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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.