Home / 13,878,709.72-20,820,295.33-4,778,569.91

Finding the Fourth Proportional to 13,878,709.72, 20,820,295.33 and 4,778,569.91

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Solution

The fourth proportional to 13,878,709.72, 20,820,295.33 and 4,778,569.91 is: 7,168,622.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878,709.72 : 20,820,295.33 = 4,778,569.91 : x
  2. Step 2: Convert to fraction form
    13,878,709.72/20,820,295.33 = 4,778,569.91/x
  3. Step 3: Cross multiply
    13,878,709.72x = 20,820,295.33 × 4,778,569.91
  4. Step 4: Simplify right side
    13,878,709.72x = 99,491,236,821,355.83
  5. Step 5: Solve for x
    x = 99,491,236,821,355.83/13,878,709.72
  6. Step 6: Final answer
    x = 7,168,622.94

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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.