Home / 21,780,821.80-32,671,232.70-20,717,939.80

Finding the Fourth Proportional to 21,780,821.80, 32,671,232.70 and 20,717,939.80

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Solution

The fourth proportional to 21,780,821.80, 32,671,232.70 and 20,717,939.80 is: 31,076,909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,821.80 : 32,671,232.70 = 20,717,939.80 : x
  2. Step 2: Convert to fraction form
    21,780,821.80/32,671,232.70 = 20,717,939.80/x
  3. Step 3: Cross multiply
    21,780,821.80x = 32,671,232.70 × 20,717,939.80
  4. Step 4: Simplify right side
    21,780,821.80x = 676,880,632,270,391.50
  5. Step 5: Solve for x
    x = 676,880,632,270,391.50/21,780,821.80
  6. Step 6: Final answer
    x = 31,076,909.70

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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.