Home / 20,440,440.73-28,200,685.15-13,102,320.15

Finding the Fourth Proportional to 20,440,440.73, 28,200,685.15 and 13,102,320.15

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Solution

The fourth proportional to 20,440,440.73, 28,200,685.15 and 13,102,320.15 is: 18,076,635.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440,440.73 : 28,200,685.15 = 13,102,320.15 : x
  2. Step 2: Convert to fraction form
    20,440,440.73/28,200,685.15 = 13,102,320.15/x
  3. Step 3: Cross multiply
    20,440,440.73x = 28,200,685.15 × 13,102,320.15
  4. Step 4: Simplify right side
    20,440,440.73x = 369,494,405,284,650.75
  5. Step 5: Solve for x
    x = 369,494,405,284,650.75/20,440,440.73
  6. Step 6: Final answer
    x = 18,076,635.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.