Home / 39,037.52-53,871-21,132.48

Finding the Fourth Proportional to 39,037.52, 53,871 and 21,132.48

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Solution

The fourth proportional to 39,037.52, 53,871 and 21,132.48 is: 29,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,037.52 : 53,871 = 21,132.48 : x
  2. Step 2: Convert to fraction form
    39,037.52/53,871 = 21,132.48/x
  3. Step 3: Cross multiply
    39,037.52x = 53,871 × 21,132.48
  4. Step 4: Simplify right side
    39,037.52x = 1,138,427,830.08
  5. Step 5: Solve for x
    x = 1,138,427,830.08/39,037.52
  6. Step 6: Final answer
    x = 29,162.40

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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.