Home / 18,878,920.20-28,293,885.90-8,760,011.40

Finding the Fourth Proportional to 18,878,920.20, 28,293,885.90 and 8,760,011.40

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Solution

The fourth proportional to 18,878,920.20, 28,293,885.90 and 8,760,011.40 is: 13,128,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878,920.20 : 28,293,885.90 = 8,760,011.40 : x
  2. Step 2: Convert to fraction form
    18,878,920.20/28,293,885.90 = 8,760,011.40/x
  3. Step 3: Cross multiply
    18,878,920.20x = 28,293,885.90 × 8,760,011.40
  4. Step 4: Simplify right side
    18,878,920.20x = 247,854,763,034,299.25
  5. Step 5: Solve for x
    x = 247,854,763,034,299.25/18,878,920.20
  6. Step 6: Final answer
    x = 13,128,651.45

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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.