Home / 39,038.21-53,872.36-21,132.76

Finding the Fourth Proportional to 39,038.21, 53,872.36 and 21,132.76

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Solution

The fourth proportional to 39,038.21, 53,872.36 and 21,132.76 is: 29,163.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,038.21 : 53,872.36 = 21,132.76 : x
  2. Step 2: Convert to fraction form
    39,038.21/53,872.36 = 21,132.76/x
  3. Step 3: Cross multiply
    39,038.21x = 53,872.36 × 21,132.76
  4. Step 4: Simplify right side
    39,038.21x = 1,138,471,654.51
  5. Step 5: Solve for x
    x = 1,138,471,654.51/39,038.21
  6. Step 6: Final answer
    x = 29,163.01

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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.