Home / 20,702,142.24-28,569,073.41-12,005,478.42

Finding the Fourth Proportional to 20,702,142.24, 28,569,073.41 and 12,005,478.42

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Solution

The fourth proportional to 20,702,142.24, 28,569,073.41 and 12,005,478.42 is: 16,567,628.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,142.24 : 28,569,073.41 = 12,005,478.42 : x
  2. Step 2: Convert to fraction form
    20,702,142.24/28,569,073.41 = 12,005,478.42/x
  3. Step 3: Cross multiply
    20,702,142.24x = 28,569,073.41 × 12,005,478.42
  4. Step 4: Simplify right side
    20,702,142.24x = 342,985,394,303,150.81
  5. Step 5: Solve for x
    x = 342,985,394,303,150.81/20,702,142.24
  6. Step 6: Final answer
    x = 16,567,628.14

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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.