Home / 20,548,141.64-28,345,684.73-12,705,146.78

Finding the Fourth Proportional to 20,548,141.64, 28,345,684.73 and 12,705,146.78

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Solution

The fourth proportional to 20,548,141.64, 28,345,684.73 and 12,705,146.78 is: 17,526,455.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548,141.64 : 28,345,684.73 = 12,705,146.78 : x
  2. Step 2: Convert to fraction form
    20,548,141.64/28,345,684.73 = 12,705,146.78/x
  3. Step 3: Cross multiply
    20,548,141.64x = 28,345,684.73 × 12,705,146.78
  4. Step 4: Simplify right side
    20,548,141.64x = 360,136,085,074,254.62
  5. Step 5: Solve for x
    x = 360,136,085,074,254.62/20,548,141.64
  6. Step 6: Final answer
    x = 17,526,455.26

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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.