Home / 12,447,628.40-18,671,442.60-11,691,801.20

Finding the Fourth Proportional to 12,447,628.40, 18,671,442.60 and 11,691,801.20

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Solution

The fourth proportional to 12,447,628.40, 18,671,442.60 and 11,691,801.20 is: 17,537,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447,628.40 : 18,671,442.60 = 11,691,801.20 : x
  2. Step 2: Convert to fraction form
    12,447,628.40/18,671,442.60 = 11,691,801.20/x
  3. Step 3: Cross multiply
    12,447,628.40x = 18,671,442.60 × 11,691,801.20
  4. Step 4: Simplify right side
    12,447,628.40x = 218,302,794,996,411.12
  5. Step 5: Solve for x
    x = 218,302,794,996,411.12/12,447,628.40
  6. Step 6: Final answer
    x = 17,537,701.80

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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.