Home / 20,569,814.30-28,389,235.55-12,731,840.58

Finding the Fourth Proportional to 20,569,814.30, 28,389,235.55 and 12,731,840.58

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Solution

The fourth proportional to 20,569,814.30, 28,389,235.55 and 12,731,840.58 is: 17,571,729.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569,814.30 : 28,389,235.55 = 12,731,840.58 : x
  2. Step 2: Convert to fraction form
    20,569,814.30/28,389,235.55 = 12,731,840.58/x
  3. Step 3: Cross multiply
    20,569,814.30x = 28,389,235.55 × 12,731,840.58
  4. Step 4: Simplify right side
    20,569,814.30x = 361,447,221,147,009.44
  5. Step 5: Solve for x
    x = 361,447,221,147,009.44/20,569,814.30
  6. Step 6: Final answer
    x = 17,571,729.91

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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.