Home / 20,657,113.30-30,959,097.90-12,561,495.40

Finding the Fourth Proportional to 20,657,113.30, 30,959,097.90 and 12,561,495.40

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Solution

The fourth proportional to 20,657,113.30, 30,959,097.90 and 12,561,495.40 is: 18,826,084.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657,113.30 : 30,959,097.90 = 12,561,495.40 : x
  2. Step 2: Convert to fraction form
    20,657,113.30/30,959,097.90 = 12,561,495.40/x
  3. Step 3: Cross multiply
    20,657,113.30x = 30,959,097.90 × 12,561,495.40
  4. Step 4: Simplify right side
    20,657,113.30x = 388,892,565,858,999.62
  5. Step 5: Solve for x
    x = 388,892,565,858,999.62/20,657,113.30
  6. Step 6: Final answer
    x = 18,826,084.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.