Home / 12,447,746.40-18,671,619.60-11,691,919.20

Finding the Fourth Proportional to 12,447,746.40, 18,671,619.60 and 11,691,919.20

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Solution

The fourth proportional to 12,447,746.40, 18,671,619.60 and 11,691,919.20 is: 17,537,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447,746.40 : 18,671,619.60 = 11,691,919.20 : x
  2. Step 2: Convert to fraction form
    12,447,746.40/18,671,619.60 = 11,691,919.20/x
  3. Step 3: Cross multiply
    12,447,746.40x = 18,671,619.60 × 11,691,919.20
  4. Step 4: Simplify right side
    12,447,746.40x = 218,307,067,696,336.31
  5. Step 5: Solve for x
    x = 218,307,067,696,336.31/12,447,746.40
  6. Step 6: Final answer
    x = 17,537,878.80

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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.