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Finding the Fourth Proportional to 18,798.30, 28,246.05 and 16,659.90

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Solution

The fourth proportional to 18,798.30, 28,246.05 and 16,659.90 is: 25,032.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.30 : 28,246.05 = 16,659.90 : x
  2. Step 2: Convert to fraction form
    18,798.30/28,246.05 = 16,659.90/x
  3. Step 3: Cross multiply
    18,798.30x = 28,246.05 × 16,659.90
  4. Step 4: Simplify right side
    18,798.30x = 470,576,368.40
  5. Step 5: Solve for x
    x = 470,576,368.40/18,798.30
  6. Step 6: Final answer
    x = 25,032.92

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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.