Home / 20,923,257.54-31,372,048.62-8,128,826.40

Finding the Fourth Proportional to 20,923,257.54, 31,372,048.62 and 8,128,826.40

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Solution

The fourth proportional to 20,923,257.54, 31,372,048.62 and 8,128,826.40 is: 12,188,252.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923,257.54 : 31,372,048.62 = 8,128,826.40 : x
  2. Step 2: Convert to fraction form
    20,923,257.54/31,372,048.62 = 8,128,826.40/x
  3. Step 3: Cross multiply
    20,923,257.54x = 31,372,048.62 × 8,128,826.40
  4. Step 4: Simplify right side
    20,923,257.54x = 255,017,937,044,339.59
  5. Step 5: Solve for x
    x = 255,017,937,044,339.59/20,923,257.54
  6. Step 6: Final answer
    x = 12,188,252.07

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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.