Home / 20,652.47-28,500.63-11,221.03

Finding the Fourth Proportional to 20,652.47, 28,500.63 and 11,221.03

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Solution

The fourth proportional to 20,652.47, 28,500.63 and 11,221.03 is: 15,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.47 : 28,500.63 = 11,221.03 : x
  2. Step 2: Convert to fraction form
    20,652.47/28,500.63 = 11,221.03/x
  3. Step 3: Cross multiply
    20,652.47x = 28,500.63 × 11,221.03
  4. Step 4: Simplify right side
    20,652.47x = 319,806,512.47
  5. Step 5: Solve for x
    x = 319,806,512.47/20,652.47
  6. Step 6: Final answer
    x = 15,485.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.