Home / 20,881,120.74-28,819,412.27-12,179,293.35

Finding the Fourth Proportional to 20,881,120.74, 28,819,412.27 and 12,179,293.35

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Solution

The fourth proportional to 20,881,120.74, 28,819,412.27 and 12,179,293.35 is: 16,809,446.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,120.74 : 28,819,412.27 = 12,179,293.35 : x
  2. Step 2: Convert to fraction form
    20,881,120.74/28,819,412.27 = 12,179,293.35/x
  3. Step 3: Cross multiply
    20,881,120.74x = 28,819,412.27 × 12,179,293.35
  4. Step 4: Simplify right side
    20,881,120.74x = 351,000,076,213,677.19
  5. Step 5: Solve for x
    x = 351,000,076,213,677.19/20,881,120.74
  6. Step 6: Final answer
    x = 16,809,446.23

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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.