Home / 28,025,186.40-42,037,779.60-12,879,117.90

Finding the Fourth Proportional to 28,025,186.40, 42,037,779.60 and 12,879,117.90

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Solution

The fourth proportional to 28,025,186.40, 42,037,779.60 and 12,879,117.90 is: 19,318,676.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,025,186.40 : 42,037,779.60 = 12,879,117.90 : x
  2. Step 2: Convert to fraction form
    28,025,186.40/42,037,779.60 = 12,879,117.90/x
  3. Step 3: Cross multiply
    28,025,186.40x = 42,037,779.60 × 12,879,117.90
  4. Step 4: Simplify right side
    28,025,186.40x = 541,409,519,722,614.88
  5. Step 5: Solve for x
    x = 541,409,519,722,614.88/28,025,186.40
  6. Step 6: Final answer
    x = 19,318,676.85

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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.