Home / 20,722,389.60-31,071,142.80-10,644,693.60

Finding the Fourth Proportional to 20,722,389.60, 31,071,142.80 and 10,644,693.60

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Solution

The fourth proportional to 20,722,389.60, 31,071,142.80 and 10,644,693.60 is: 15,960,649.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,389.60 : 31,071,142.80 = 10,644,693.60 : x
  2. Step 2: Convert to fraction form
    20,722,389.60/31,071,142.80 = 10,644,693.60/x
  3. Step 3: Cross multiply
    20,722,389.60x = 31,071,142.80 × 10,644,693.60
  4. Step 4: Simplify right side
    20,722,389.60x = 330,742,794,907,846.06
  5. Step 5: Solve for x
    x = 330,742,794,907,846.06/20,722,389.60
  6. Step 6: Final answer
    x = 15,960,649.39

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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.