Home / 20,923,256.95-31,372,047.73-8,128,825.81

Finding the Fourth Proportional to 20,923,256.95, 31,372,047.73 and 8,128,825.81

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Solution

The fourth proportional to 20,923,256.95, 31,372,047.73 and 8,128,825.81 is: 12,188,251.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923,256.95 : 31,372,047.73 = 8,128,825.81 : x
  2. Step 2: Convert to fraction form
    20,923,256.95/31,372,047.73 = 8,128,825.81/x
  3. Step 3: Cross multiply
    20,923,256.95x = 31,372,047.73 × 8,128,825.81
  4. Step 4: Simplify right side
    20,923,256.95x = 255,017,911,300,175.91
  5. Step 5: Solve for x
    x = 255,017,911,300,175.91/20,923,256.95
  6. Step 6: Final answer
    x = 12,188,251.18

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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.