Home / 20,722,543.80-31,083,815.70-15,683,695.80

Finding the Fourth Proportional to 20,722,543.80, 31,083,815.70 and 15,683,695.80

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Solution

The fourth proportional to 20,722,543.80, 31,083,815.70 and 15,683,695.80 is: 23,525,543.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,543.80 : 31,083,815.70 = 15,683,695.80 : x
  2. Step 2: Convert to fraction form
    20,722,543.80/31,083,815.70 = 15,683,695.80/x
  3. Step 3: Cross multiply
    20,722,543.80x = 31,083,815.70 × 15,683,695.80
  4. Step 4: Simplify right side
    20,722,543.80x = 487,509,109,742,064.06
  5. Step 5: Solve for x
    x = 487,509,109,742,064.06/20,722,543.80
  6. Step 6: Final answer
    x = 23,525,543.70

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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.