Home / 20,804,861.80-31,207,292.70-18,285,437.80

Finding the Fourth Proportional to 20,804,861.80, 31,207,292.70 and 18,285,437.80

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Solution

The fourth proportional to 20,804,861.80, 31,207,292.70 and 18,285,437.80 is: 27,428,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,861.80 : 31,207,292.70 = 18,285,437.80 : x
  2. Step 2: Convert to fraction form
    20,804,861.80/31,207,292.70 = 18,285,437.80/x
  3. Step 3: Cross multiply
    20,804,861.80x = 31,207,292.70 × 18,285,437.80
  4. Step 4: Simplify right side
    20,804,861.80x = 570,639,009,572,244.12
  5. Step 5: Solve for x
    x = 570,639,009,572,244.12/20,804,861.80
  6. Step 6: Final answer
    x = 27,428,156.70

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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.