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Finding the Fourth Proportional to 15,305.40, 22,908.87 and 7,899.77

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Solution

The fourth proportional to 15,305.40, 22,908.87 and 7,899.77 is: 11,824.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,305.40 : 22,908.87 = 7,899.77 : x
  2. Step 2: Convert to fraction form
    15,305.40/22,908.87 = 7,899.77/x
  3. Step 3: Cross multiply
    15,305.40x = 22,908.87 × 7,899.77
  4. Step 4: Simplify right side
    15,305.40x = 180,974,861.23
  5. Step 5: Solve for x
    x = 180,974,861.23/15,305.40
  6. Step 6: Final answer
    x = 11,824.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.