Home / 20,437,420.32-30,621,427.65-12,333,366.72

Finding the Fourth Proportional to 20,437,420.32, 30,621,427.65 and 12,333,366.72

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Solution

The fourth proportional to 20,437,420.32, 30,621,427.65 and 12,333,366.72 is: 18,479,107.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437,420.32 : 30,621,427.65 = 12,333,366.72 : x
  2. Step 2: Convert to fraction form
    20,437,420.32/30,621,427.65 = 12,333,366.72/x
  3. Step 3: Cross multiply
    20,437,420.32x = 30,621,427.65 × 12,333,366.72
  4. Step 4: Simplify right side
    20,437,420.32x = 377,665,296,697,397.81
  5. Step 5: Solve for x
    x = 377,665,296,697,397.81/20,437,420.32
  6. Step 6: Final answer
    x = 18,479,107.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.