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Finding the Fourth Proportional to 18,703.82, 28,055.73 and 7,008.83

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Solution

The fourth proportional to 18,703.82, 28,055.73 and 7,008.83 is: 10,513.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.82 : 28,055.73 = 7,008.83 : x
  2. Step 2: Convert to fraction form
    18,703.82/28,055.73 = 7,008.83/x
  3. Step 3: Cross multiply
    18,703.82x = 28,055.73 × 7,008.83
  4. Step 4: Simplify right side
    18,703.82x = 196,637,807.05
  5. Step 5: Solve for x
    x = 196,637,807.05/18,703.82
  6. Step 6: Final answer
    x = 10,513.25

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Double scale
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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.