Home / 20,780,000.80-31,172,953.65-6,401,569.30

Finding the Fourth Proportional to 20,780,000.80, 31,172,953.65 and 6,401,569.30

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Solution

The fourth proportional to 20,780,000.80, 31,172,953.65 and 6,401,569.30 is: 9,603,263.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780,000.80 : 31,172,953.65 = 6,401,569.30 : x
  2. Step 2: Convert to fraction form
    20,780,000.80/31,172,953.65 = 6,401,569.30/x
  3. Step 3: Cross multiply
    20,780,000.80x = 31,172,953.65 × 6,401,569.30
  4. Step 4: Simplify right side
    20,780,000.80x = 199,555,823,076,162.94
  5. Step 5: Solve for x
    x = 199,555,823,076,162.94/20,780,000.80
  6. Step 6: Final answer
    x = 9,603,263.49

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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.