Home / 20,569,915.34-28,389,374.85-12,731,941.64

Finding the Fourth Proportional to 20,569,915.34, 28,389,374.85 and 12,731,941.64

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Solution

The fourth proportional to 20,569,915.34, 28,389,374.85 and 12,731,941.64 is: 17,571,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569,915.34 : 28,389,374.85 = 12,731,941.64 : x
  2. Step 2: Convert to fraction form
    20,569,915.34/28,389,374.85 = 12,731,941.64/x
  3. Step 3: Cross multiply
    20,569,915.34x = 28,389,374.85 × 12,731,941.64
  4. Step 4: Simplify right side
    20,569,915.34x = 361,451,863,786,283.81
  5. Step 5: Solve for x
    x = 361,451,863,786,283.81/20,569,915.34
  6. Step 6: Final answer
    x = 17,571,869.30

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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.