Home / 20,405,099.96-28,156,955.97-12,563,368.16

Finding the Fourth Proportional to 20,405,099.96, 28,156,955.97 and 12,563,368.16

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Solution

The fourth proportional to 20,405,099.96, 28,156,955.97 and 12,563,368.16 is: 17,336,166.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405,099.96 : 28,156,955.97 = 12,563,368.16 : x
  2. Step 2: Convert to fraction form
    20,405,099.96/28,156,955.97 = 12,563,368.16/x
  3. Step 3: Cross multiply
    20,405,099.96x = 28,156,955.97 × 12,563,368.16
  4. Step 4: Simplify right side
    20,405,099.96x = 353,746,203,975,235.12
  5. Step 5: Solve for x
    x = 353,746,203,975,235.12/20,405,099.96
  6. Step 6: Final answer
    x = 17,336,166.19

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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.