Home / 21,004,046.80-31,506,070.20-12,021,211.60

Finding the Fourth Proportional to 21,004,046.80, 31,506,070.20 and 12,021,211.60

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Solution

The fourth proportional to 21,004,046.80, 31,506,070.20 and 12,021,211.60 is: 18,031,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004,046.80 : 31,506,070.20 = 12,021,211.60 : x
  2. Step 2: Convert to fraction form
    21,004,046.80/31,506,070.20 = 12,021,211.60/x
  3. Step 3: Cross multiply
    21,004,046.80x = 31,506,070.20 × 12,021,211.60
  4. Step 4: Simplify right side
    21,004,046.80x = 378,741,136,558,654.31
  5. Step 5: Solve for x
    x = 378,741,136,558,654.31/21,004,046.80
  6. Step 6: Final answer
    x = 18,031,817.40

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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.