Home / 28,113,609.80-42,142,421.10-12,941,078.60

Finding the Fourth Proportional to 28,113,609.80, 42,142,421.10 and 12,941,078.60

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Solution

The fourth proportional to 28,113,609.80, 42,142,421.10 and 12,941,078.60 is: 19,398,732.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113,609.80 : 42,142,421.10 = 12,941,078.60 : x
  2. Step 2: Convert to fraction form
    28,113,609.80/42,142,421.10 = 12,941,078.60/x
  3. Step 3: Cross multiply
    28,113,609.80x = 42,142,421.10 × 12,941,078.60
  4. Step 4: Simplify right side
    28,113,609.80x = 545,368,383,849,398.44
  5. Step 5: Solve for x
    x = 545,368,383,849,398.44/28,113,609.80
  6. Step 6: Final answer
    x = 19,398,732.06

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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.