Home / 21,560.37-29,758.56-20,321.07

Finding the Fourth Proportional to 21,560.37, 29,758.56 and 20,321.07

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Solution

The fourth proportional to 21,560.37, 29,758.56 and 20,321.07 is: 28,048.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,560.37 : 29,758.56 = 20,321.07 : x
  2. Step 2: Convert to fraction form
    21,560.37/29,758.56 = 20,321.07/x
  3. Step 3: Cross multiply
    21,560.37x = 29,758.56 × 20,321.07
  4. Step 4: Simplify right side
    21,560.37x = 604,725,780.86
  5. Step 5: Solve for x
    x = 604,725,780.86/21,560.37
  6. Step 6: Final answer
    x = 28,048.02

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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.