Home / 28,296,007.20-42,444,010.80-12,119,205.60

Finding the Fourth Proportional to 28,296,007.20, 42,444,010.80 and 12,119,205.60

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Solution

The fourth proportional to 28,296,007.20, 42,444,010.80 and 12,119,205.60 is: 18,178,808.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,296,007.20 : 42,444,010.80 = 12,119,205.60 : x
  2. Step 2: Convert to fraction form
    28,296,007.20/42,444,010.80 = 12,119,205.60/x
  3. Step 3: Cross multiply
    28,296,007.20x = 42,444,010.80 × 12,119,205.60
  4. Step 4: Simplify right side
    28,296,007.20x = 514,387,693,373,820.44
  5. Step 5: Solve for x
    x = 514,387,693,373,820.44/28,296,007.20
  6. Step 6: Final answer
    x = 18,178,808.40

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1.5x scale

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.