Home / 21,995.41-30,355.28-12,563.77

Finding the Fourth Proportional to 21,995.41, 30,355.28 and 12,563.77

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Solution

The fourth proportional to 21,995.41, 30,355.28 and 12,563.77 is: 17,338.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.41 : 30,355.28 = 12,563.77 : x
  2. Step 2: Convert to fraction form
    21,995.41/30,355.28 = 12,563.77/x
  3. Step 3: Cross multiply
    21,995.41x = 30,355.28 × 12,563.77
  4. Step 4: Simplify right side
    21,995.41x = 381,376,693.39
  5. Step 5: Solve for x
    x = 381,376,693.39/21,995.41
  6. Step 6: Final answer
    x = 17,338.92

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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.