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Finding the Fourth Proportional to 15,043,980, 20,760,692.40 and 8,605,452

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Solution

The fourth proportional to 15,043,980, 20,760,692.40 and 8,605,452 is: 11,875,523.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043,980 : 20,760,692.40 = 8,605,452 : x
  2. Step 2: Convert to fraction form
    15,043,980/20,760,692.40 = 8,605,452/x
  3. Step 3: Cross multiply
    15,043,980x = 20,760,692.40 × 8,605,452
  4. Step 4: Simplify right side
    15,043,980x = 178,655,141,934,964.78
  5. Step 5: Solve for x
    x = 178,655,141,934,964.78/15,043,980
  6. Step 6: Final answer
    x = 11,875,523.76

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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.