Home / 12,288,779.10-18,447,165.45-7,242,932.70

Finding the Fourth Proportional to 12,288,779.10, 18,447,165.45 and 7,242,932.70

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Solution

The fourth proportional to 12,288,779.10, 18,447,165.45 and 7,242,932.70 is: 10,872,648.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288,779.10 : 18,447,165.45 = 7,242,932.70 : x
  2. Step 2: Convert to fraction form
    12,288,779.10/18,447,165.45 = 7,242,932.70/x
  3. Step 3: Cross multiply
    12,288,779.10x = 18,447,165.45 × 7,242,932.70
  4. Step 4: Simplify right side
    12,288,779.10x = 133,611,577,860,115.22
  5. Step 5: Solve for x
    x = 133,611,577,860,115.22/12,288,779.10
  6. Step 6: Final answer
    x = 10,872,648.68

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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.