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Finding the Fourth Proportional to 18,683.77, 28,001.95 and 18,486.02

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Solution

The fourth proportional to 18,683.77, 28,001.95 and 18,486.02 is: 27,705.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.77 : 28,001.95 = 18,486.02 : x
  2. Step 2: Convert to fraction form
    18,683.77/28,001.95 = 18,486.02/x
  3. Step 3: Cross multiply
    18,683.77x = 28,001.95 × 18,486.02
  4. Step 4: Simplify right side
    18,683.77x = 517,644,700.85
  5. Step 5: Solve for x
    x = 517,644,700.85/18,683.77
  6. Step 6: Final answer
    x = 27,705.58

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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.