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Finding the Fourth Proportional to 18,829,477.20, 28,246,840.20 and 8,046,692.40

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Solution

The fourth proportional to 18,829,477.20, 28,246,840.20 and 8,046,692.40 is: 12,071,160.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829,477.20 : 28,246,840.20 = 8,046,692.40 : x
  2. Step 2: Convert to fraction form
    18,829,477.20/28,246,840.20 = 8,046,692.40/x
  3. Step 3: Cross multiply
    18,829,477.20x = 28,246,840.20 × 8,046,692.40
  4. Step 4: Simplify right side
    18,829,477.20x = 227,293,634,361,354.50
  5. Step 5: Solve for x
    x = 227,293,634,361,354.50/18,829,477.20
  6. Step 6: Final answer
    x = 12,071,160.13

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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.