Home / 21,531.52-32,108.85-21,334.68

Finding the Fourth Proportional to 21,531.52, 32,108.85 and 21,334.68

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Solution

The fourth proportional to 21,531.52, 32,108.85 and 21,334.68 is: 31,815.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.52 : 32,108.85 = 21,334.68 : x
  2. Step 2: Convert to fraction form
    21,531.52/32,108.85 = 21,334.68/x
  3. Step 3: Cross multiply
    21,531.52x = 32,108.85 × 21,334.68
  4. Step 4: Simplify right side
    21,531.52x = 685,032,039.92
  5. Step 5: Solve for x
    x = 685,032,039.92/21,531.52
  6. Step 6: Final answer
    x = 31,815.31

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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.