Home / 23,990.77-33,090.11-20,798.36

Finding the Fourth Proportional to 23,990.77, 33,090.11 and 20,798.36

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Solution

The fourth proportional to 23,990.77, 33,090.11 and 20,798.36 is: 28,686.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,990.77 : 33,090.11 = 20,798.36 : x
  2. Step 2: Convert to fraction form
    23,990.77/33,090.11 = 20,798.36/x
  3. Step 3: Cross multiply
    23,990.77x = 33,090.11 × 20,798.36
  4. Step 4: Simplify right side
    23,990.77x = 688,219,906.76
  5. Step 5: Solve for x
    x = 688,219,906.76/23,990.77
  6. Step 6: Final answer
    x = 28,686.86

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1.5x scale

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.