Home / 20,702,139.49-28,569,069.62-12,005,475.67

Finding the Fourth Proportional to 20,702,139.49, 28,569,069.62 and 12,005,475.67

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Solution

The fourth proportional to 20,702,139.49, 28,569,069.62 and 12,005,475.67 is: 16,567,624.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,139.49 : 28,569,069.62 = 12,005,475.67 : x
  2. Step 2: Convert to fraction form
    20,702,139.49/28,569,069.62 = 12,005,475.67/x
  3. Step 3: Cross multiply
    20,702,139.49x = 28,569,069.62 × 12,005,475.67
  4. Step 4: Simplify right side
    20,702,139.49x = 342,985,270,177,418.75
  5. Step 5: Solve for x
    x = 342,985,270,177,418.75/20,702,139.49
  6. Step 6: Final answer
    x = 16,567,624.34

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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.