Home / 20,380,823.84-28,114,817.10-12,115,006.76

Finding the Fourth Proportional to 20,380,823.84, 28,114,817.10 and 12,115,006.76

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Solution

The fourth proportional to 20,380,823.84, 28,114,817.10 and 12,115,006.76 is: 16,712,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380,823.84 : 28,114,817.10 = 12,115,006.76 : x
  2. Step 2: Convert to fraction form
    20,380,823.84/28,114,817.10 = 12,115,006.76/x
  3. Step 3: Cross multiply
    20,380,823.84x = 28,114,817.10 × 12,115,006.76
  4. Step 4: Simplify right side
    20,380,823.84x = 340,611,199,222,663.62
  5. Step 5: Solve for x
    x = 340,611,199,222,663.62/20,380,823.84
  6. Step 6: Final answer
    x = 16,712,337.14

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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.