Home / 21,237,010.80-31,855,516.20-5,280,658.80

Finding the Fourth Proportional to 21,237,010.80, 31,855,516.20 and 5,280,658.80

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Solution

The fourth proportional to 21,237,010.80, 31,855,516.20 and 5,280,658.80 is: 7,920,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237,010.80 : 31,855,516.20 = 5,280,658.80 : x
  2. Step 2: Convert to fraction form
    21,237,010.80/31,855,516.20 = 5,280,658.80/x
  3. Step 3: Cross multiply
    21,237,010.80x = 31,855,516.20 × 5,280,658.80
  4. Step 4: Simplify right side
    21,237,010.80x = 168,218,111,950,072.56
  5. Step 5: Solve for x
    x = 168,218,111,950,072.56/21,237,010.80
  6. Step 6: Final answer
    x = 7,920,988.20

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1.5x scale

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.