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Finding the Fourth Proportional to 13,895.84, 20,832.08 and 11,256.80

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Solution

The fourth proportional to 13,895.84, 20,832.08 and 11,256.80 is: 16,875.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,895.84 : 20,832.08 = 11,256.80 : x
  2. Step 2: Convert to fraction form
    13,895.84/20,832.08 = 11,256.80/x
  3. Step 3: Cross multiply
    13,895.84x = 20,832.08 × 11,256.80
  4. Step 4: Simplify right side
    13,895.84x = 234,502,638.37
  5. Step 5: Solve for x
    x = 234,502,638.37/13,895.84
  6. Step 6: Final answer
    x = 16,875.74

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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.