Home / 39,037.78-53,872.02-21,133.12

Finding the Fourth Proportional to 39,037.78, 53,872.02 and 21,133.12

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Solution

The fourth proportional to 39,037.78, 53,872.02 and 21,133.12 is: 29,163.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,037.78 : 53,872.02 = 21,133.12 : x
  2. Step 2: Convert to fraction form
    39,037.78/53,872.02 = 21,133.12/x
  3. Step 3: Cross multiply
    39,037.78x = 53,872.02 × 21,133.12
  4. Step 4: Simplify right side
    39,037.78x = 1,138,483,863.30
  5. Step 5: Solve for x
    x = 1,138,483,863.30/39,037.78
  6. Step 6: Final answer
    x = 29,163.64

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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.