Home / 21,530.52-32,107.36-21,333.68

Finding the Fourth Proportional to 21,530.52, 32,107.36 and 21,333.68

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Solution

The fourth proportional to 21,530.52, 32,107.36 and 21,333.68 is: 31,813.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,530.52 : 32,107.36 = 21,333.68 : x
  2. Step 2: Convert to fraction form
    21,530.52/32,107.36 = 21,333.68/x
  3. Step 3: Cross multiply
    21,530.52x = 32,107.36 × 21,333.68
  4. Step 4: Simplify right side
    21,530.52x = 684,968,143.88
  5. Step 5: Solve for x
    x = 684,968,143.88/21,530.52
  6. Step 6: Final answer
    x = 31,813.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.