Home / 20,712,005.60-31,056,949.20-8,731,205.60

Finding the Fourth Proportional to 20,712,005.60, 31,056,949.20 and 8,731,205.60

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Solution

The fourth proportional to 20,712,005.60, 31,056,949.20 and 8,731,205.60 is: 13,092,146.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,005.60 : 31,056,949.20 = 8,731,205.60 : x
  2. Step 2: Convert to fraction form
    20,712,005.60/31,056,949.20 = 8,731,205.60/x
  3. Step 3: Cross multiply
    20,712,005.60x = 31,056,949.20 × 8,731,205.60
  4. Step 4: Simplify right side
    20,712,005.60x = 271,164,608,773,955.50
  5. Step 5: Solve for x
    x = 271,164,608,773,955.50/20,712,005.60
  6. Step 6: Final answer
    x = 13,092,146.36

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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.