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Finding the Fourth Proportional to 18,078.55, 27,071.10 and 12,473.51

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Solution

The fourth proportional to 18,078.55, 27,071.10 and 12,473.51 is: 18,678.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,078.55 : 27,071.10 = 12,473.51 : x
  2. Step 2: Convert to fraction form
    18,078.55/27,071.10 = 12,473.51/x
  3. Step 3: Cross multiply
    18,078.55x = 27,071.10 × 12,473.51
  4. Step 4: Simplify right side
    18,078.55x = 337,671,501.21
  5. Step 5: Solve for x
    x = 337,671,501.21/18,078.55
  6. Step 6: Final answer
    x = 18,678.02

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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.