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Finding the Fourth Proportional to 19,088.72, 28,633.08 and 9,855.44

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Solution

The fourth proportional to 19,088.72, 28,633.08 and 9,855.44 is: 14,783.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,088.72 : 28,633.08 = 9,855.44 : x
  2. Step 2: Convert to fraction form
    19,088.72/28,633.08 = 9,855.44/x
  3. Step 3: Cross multiply
    19,088.72x = 28,633.08 × 9,855.44
  4. Step 4: Simplify right side
    19,088.72x = 282,191,601.96
  5. Step 5: Solve for x
    x = 282,191,601.96/19,088.72
  6. Step 6: Final answer
    x = 14,783.16

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Similar ratio
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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.