Home / 21,855.06-30,158.87-12,295.17

Finding the Fourth Proportional to 21,855.06, 30,158.87 and 12,295.17

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Solution

The fourth proportional to 21,855.06, 30,158.87 and 12,295.17 is: 16,966.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.06 : 30,158.87 = 12,295.17 : x
  2. Step 2: Convert to fraction form
    21,855.06/30,158.87 = 12,295.17/x
  3. Step 3: Cross multiply
    21,855.06x = 30,158.87 × 12,295.17
  4. Step 4: Simplify right side
    21,855.06x = 370,808,372.18
  5. Step 5: Solve for x
    x = 370,808,372.18/21,855.06
  6. Step 6: Final answer
    x = 16,966.71

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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.