Home / 20,762,471.80-31,149,150.90-7,983,393.40

Finding the Fourth Proportional to 20,762,471.80, 31,149,150.90 and 7,983,393.40

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Solution

The fourth proportional to 20,762,471.80, 31,149,150.90 and 7,983,393.40 is: 11,977,183.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762,471.80 : 31,149,150.90 = 7,983,393.40 : x
  2. Step 2: Convert to fraction form
    20,762,471.80/31,149,150.90 = 7,983,393.40/x
  3. Step 3: Cross multiply
    20,762,471.80x = 31,149,150.90 × 7,983,393.40
  4. Step 4: Simplify right side
    20,762,471.80x = 248,675,925,710,664.06
  5. Step 5: Solve for x
    x = 248,675,925,710,664.06/20,762,471.80
  6. Step 6: Final answer
    x = 11,977,183.07

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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.