Home / 20,722,499.80-31,083,749.70-15,683,651.80

Finding the Fourth Proportional to 20,722,499.80, 31,083,749.70 and 15,683,651.80

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Solution

The fourth proportional to 20,722,499.80, 31,083,749.70 and 15,683,651.80 is: 23,525,477.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,499.80 : 31,083,749.70 = 15,683,651.80 : x
  2. Step 2: Convert to fraction form
    20,722,499.80/31,083,749.70 = 15,683,651.80/x
  3. Step 3: Cross multiply
    20,722,499.80x = 31,083,749.70 × 15,683,651.80
  4. Step 4: Simplify right side
    20,722,499.80x = 487,506,706,933,154.50
  5. Step 5: Solve for x
    x = 487,506,706,933,154.50/20,722,499.80
  6. Step 6: Final answer
    x = 23,525,477.70

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Similar ratio
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1.5x scale

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.