Home / 20,991,645.60-31,487,468.40-12,009,899.04

Finding the Fourth Proportional to 20,991,645.60, 31,487,468.40 and 12,009,899.04

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Solution

The fourth proportional to 20,991,645.60, 31,487,468.40 and 12,009,899.04 is: 18,014,848.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,991,645.60 : 31,487,468.40 = 12,009,899.04 : x
  2. Step 2: Convert to fraction form
    20,991,645.60/31,487,468.40 = 12,009,899.04/x
  3. Step 3: Cross multiply
    20,991,645.60x = 31,487,468.40 × 12,009,899.04
  4. Step 4: Simplify right side
    20,991,645.60x = 378,161,316,509,190.31
  5. Step 5: Solve for x
    x = 378,161,316,509,190.31/20,991,645.60
  6. Step 6: Final answer
    x = 18,014,848.56

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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.