Home / 21,022,390.80-31,523,088.60-9,649,990.80

Finding the Fourth Proportional to 21,022,390.80, 31,523,088.60 and 9,649,990.80

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Solution

The fourth proportional to 21,022,390.80, 31,523,088.60 and 9,649,990.80 is: 14,470,167.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,390.80 : 31,523,088.60 = 9,649,990.80 : x
  2. Step 2: Convert to fraction form
    21,022,390.80/31,523,088.60 = 9,649,990.80/x
  3. Step 3: Cross multiply
    21,022,390.80x = 31,523,088.60 × 9,649,990.80
  4. Step 4: Simplify right side
    21,022,390.80x = 304,197,514,977,584.94
  5. Step 5: Solve for x
    x = 304,197,514,977,584.94/21,022,390.80
  6. Step 6: Final answer
    x = 14,470,167.45

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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.