Home / 39,037.21-53,871.38-21,132.16

Finding the Fourth Proportional to 39,037.21, 53,871.38 and 21,132.16

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Solution

The fourth proportional to 39,037.21, 53,871.38 and 21,132.16 is: 29,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,037.21 : 53,871.38 = 21,132.16 : x
  2. Step 2: Convert to fraction form
    39,037.21/53,871.38 = 21,132.16/x
  3. Step 3: Cross multiply
    39,037.21x = 53,871.38 × 21,132.16
  4. Step 4: Simplify right side
    39,037.21x = 1,138,418,621.58
  5. Step 5: Solve for x
    x = 1,138,418,621.58/39,037.21
  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.