Home / 20,511,970.61-30,768,008.04-8,381,434.10

Finding the Fourth Proportional to 20,511,970.61, 30,768,008.04 and 8,381,434.10

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Solution

The fourth proportional to 20,511,970.61, 30,768,008.04 and 8,381,434.10 is: 12,572,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511,970.61 : 30,768,008.04 = 8,381,434.10 : x
  2. Step 2: Convert to fraction form
    20,511,970.61/30,768,008.04 = 8,381,434.10/x
  3. Step 3: Cross multiply
    20,511,970.61x = 30,768,008.04 × 8,381,434.10
  4. Step 4: Simplify right side
    20,511,970.61x = 257,880,031,621,690.09
  5. Step 5: Solve for x
    x = 257,880,031,621,690.09/20,511,970.61
  6. Step 6: Final answer
    x = 12,572,172.44

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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.