Home / 20,808,005.80-31,212,008.70-15,101,458.60

Finding the Fourth Proportional to 20,808,005.80, 31,212,008.70 and 15,101,458.60

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Solution

The fourth proportional to 20,808,005.80, 31,212,008.70 and 15,101,458.60 is: 22,652,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808,005.80 : 31,212,008.70 = 15,101,458.60 : x
  2. Step 2: Convert to fraction form
    20,808,005.80/31,212,008.70 = 15,101,458.60/x
  3. Step 3: Cross multiply
    20,808,005.80x = 31,212,008.70 × 15,101,458.60
  4. Step 4: Simplify right side
    20,808,005.80x = 471,346,857,205,889.81
  5. Step 5: Solve for x
    x = 471,346,857,205,889.81/20,808,005.80
  6. Step 6: Final answer
    x = 22,652,187.90

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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.