Home / 20,564.80-30,822.90-15,364.60

Finding the Fourth Proportional to 20,564.80, 30,822.90 and 15,364.60

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Solution

The fourth proportional to 20,564.80, 30,822.90 and 15,364.60 is: 23,028.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.80 : 30,822.90 = 15,364.60 : x
  2. Step 2: Convert to fraction form
    20,564.80/30,822.90 = 15,364.60/x
  3. Step 3: Cross multiply
    20,564.80x = 30,822.90 × 15,364.60
  4. Step 4: Simplify right side
    20,564.80x = 473,581,529.34
  5. Step 5: Solve for x
    x = 473,581,529.34/20,564.80
  6. Step 6: Final answer
    x = 23,028.74

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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.