Home / 21,239,266.80-31,866,773.40-20,451,946.80

Finding the Fourth Proportional to 21,239,266.80, 31,866,773.40 and 20,451,946.80

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Solution

The fourth proportional to 21,239,266.80, 31,866,773.40 and 20,451,946.80 is: 30,685,501.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239,266.80 : 31,866,773.40 = 20,451,946.80 : x
  2. Step 2: Convert to fraction form
    21,239,266.80/31,866,773.40 = 20,451,946.80/x
  3. Step 3: Cross multiply
    21,239,266.80x = 31,866,773.40 × 20,451,946.80
  4. Step 4: Simplify right side
    21,239,266.80x = 651,737,554,264,455.12
  5. Step 5: Solve for x
    x = 651,737,554,264,455.12/21,239,266.80
  6. Step 6: Final answer
    x = 30,685,501.55

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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.