Home / 20,912,739.37-28,861,829.09-12,657,344.83

Finding the Fourth Proportional to 20,912,739.37, 28,861,829.09 and 12,657,344.83

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Solution

The fourth proportional to 20,912,739.37, 28,861,829.09 and 12,657,344.83 is: 17,468,496.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,739.37 : 28,861,829.09 = 12,657,344.83 : x
  2. Step 2: Convert to fraction form
    20,912,739.37/28,861,829.09 = 12,657,344.83/x
  3. Step 3: Cross multiply
    20,912,739.37x = 28,861,829.09 × 12,657,344.83
  4. Step 4: Simplify right side
    20,912,739.37x = 365,314,123,153,368.38
  5. Step 5: Solve for x
    x = 365,314,123,153,368.38/20,912,739.37
  6. Step 6: Final answer
    x = 17,468,496.91

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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.