Home / 12,209,985.20-18,314,977.80-3,691,636.40

Finding the Fourth Proportional to 12,209,985.20, 18,314,977.80 and 3,691,636.40

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Solution

The fourth proportional to 12,209,985.20, 18,314,977.80 and 3,691,636.40 is: 5,537,454.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209,985.20 : 18,314,977.80 = 3,691,636.40 : x
  2. Step 2: Convert to fraction form
    12,209,985.20/18,314,977.80 = 3,691,636.40/x
  3. Step 3: Cross multiply
    12,209,985.20x = 18,314,977.80 × 3,691,636.40
  4. Step 4: Simplify right side
    12,209,985.20x = 67,612,238,711,671.92
  5. Step 5: Solve for x
    x = 67,612,238,711,671.92/12,209,985.20
  6. Step 6: Final answer
    x = 5,537,454.60

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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.