Home / 21,150.77-29,226.56-20,125.91

Finding the Fourth Proportional to 21,150.77, 29,226.56 and 20,125.91

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Solution

The fourth proportional to 21,150.77, 29,226.56 and 20,125.91 is: 27,810.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.77 : 29,226.56 = 20,125.91 : x
  2. Step 2: Convert to fraction form
    21,150.77/29,226.56 = 20,125.91/x
  3. Step 3: Cross multiply
    21,150.77x = 29,226.56 × 20,125.91
  4. Step 4: Simplify right side
    21,150.77x = 588,211,088.61
  5. Step 5: Solve for x
    x = 588,211,088.61/21,150.77
  6. Step 6: Final answer
    x = 27,810.39

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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.