Home / 18,461,153.40-27,691,730.10-12,721,590.60

Finding the Fourth Proportional to 18,461,153.40, 27,691,730.10 and 12,721,590.60

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Solution

The fourth proportional to 18,461,153.40, 27,691,730.10 and 12,721,590.60 is: 19,082,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461,153.40 : 27,691,730.10 = 12,721,590.60 : x
  2. Step 2: Convert to fraction form
    18,461,153.40/27,691,730.10 = 12,721,590.60/x
  3. Step 3: Cross multiply
    18,461,153.40x = 27,691,730.10 × 12,721,590.60
  4. Step 4: Simplify right side
    18,461,153.40x = 352,282,853,337,897.06
  5. Step 5: Solve for x
    x = 352,282,853,337,897.06/18,461,153.40
  6. Step 6: Final answer
    x = 19,082,385.90

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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.