Home / 21,309,423.80-31,968,282.90-9,178,863.80

Finding the Fourth Proportional to 21,309,423.80, 31,968,282.90 and 9,178,863.80

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Solution

The fourth proportional to 21,309,423.80, 31,968,282.90 and 9,178,863.80 is: 13,770,082.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,423.80 : 31,968,282.90 = 9,178,863.80 : x
  2. Step 2: Convert to fraction form
    21,309,423.80/31,968,282.90 = 9,178,863.80/x
  3. Step 3: Cross multiply
    21,309,423.80x = 31,968,282.90 × 9,178,863.80
  4. Step 4: Simplify right side
    21,309,423.80x = 293,432,514,658,969
  5. Step 5: Solve for x
    x = 293,432,514,658,969/21,309,423.80
  6. Step 6: Final answer
    x = 13,770,082.07

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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.