Home / 21,144,080.40-31,716,120.60-12,641,024.40

Finding the Fourth Proportional to 21,144,080.40, 31,716,120.60 and 12,641,024.40

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Solution

The fourth proportional to 21,144,080.40, 31,716,120.60 and 12,641,024.40 is: 18,961,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144,080.40 : 31,716,120.60 = 12,641,024.40 : x
  2. Step 2: Convert to fraction form
    21,144,080.40/31,716,120.60 = 12,641,024.40/x
  3. Step 3: Cross multiply
    21,144,080.40x = 31,716,120.60 × 12,641,024.40
  4. Step 4: Simplify right side
    21,144,080.40x = 400,924,254,377,942.69
  5. Step 5: Solve for x
    x = 400,924,254,377,942.69/21,144,080.40
  6. Step 6: Final answer
    x = 18,961,536.60

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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.