Home / 38,507.08-53,133.78-21,739.72

Finding the Fourth Proportional to 38,507.08, 53,133.78 and 21,739.72

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Solution

The fourth proportional to 38,507.08, 53,133.78 and 21,739.72 is: 29,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,507.08 : 53,133.78 = 21,739.72 : x
  2. Step 2: Convert to fraction form
    38,507.08/53,133.78 = 21,739.72/x
  3. Step 3: Cross multiply
    38,507.08x = 53,133.78 × 21,739.72
  4. Step 4: Simplify right side
    38,507.08x = 1,155,113,499.74
  5. Step 5: Solve for x
    x = 1,155,113,499.74/38,507.08
  6. Step 6: Final answer
    x = 29,997.43

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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.