Home / 20,885,376.20-28,823,643-12,186,351.32

Finding the Fourth Proportional to 20,885,376.20, 28,823,643 and 12,186,351.32

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Solution

The fourth proportional to 20,885,376.20, 28,823,643 and 12,186,351.32 is: 16,818,229.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,376.20 : 28,823,643 = 12,186,351.32 : x
  2. Step 2: Convert to fraction form
    20,885,376.20/28,823,643 = 12,186,351.32/x
  3. Step 3: Cross multiply
    20,885,376.20x = 28,823,643 × 12,186,351.32
  4. Step 4: Simplify right side
    20,885,376.20x = 351,255,039,776,140.50
  5. Step 5: Solve for x
    x = 351,255,039,776,140.50/20,885,376.20
  6. Step 6: Final answer
    x = 16,818,229.01

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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.