Home / 35,620.64-49,156.32-20,507.78

Finding the Fourth Proportional to 35,620.64, 49,156.32 and 20,507.78

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Solution

The fourth proportional to 35,620.64, 49,156.32 and 20,507.78 is: 28,300.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,620.64 : 49,156.32 = 20,507.78 : x
  2. Step 2: Convert to fraction form
    35,620.64/49,156.32 = 20,507.78/x
  3. Step 3: Cross multiply
    35,620.64x = 49,156.32 × 20,507.78
  4. Step 4: Simplify right side
    35,620.64x = 1,008,086,996.17
  5. Step 5: Solve for x
    x = 1,008,086,996.17/35,620.64
  6. Step 6: Final answer
    x = 28,300.64

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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.