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Finding the Fourth Proportional to 18,726.99, 28,094.54 and 5,580.42

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Solution

The fourth proportional to 18,726.99, 28,094.54 and 5,580.42 is: 8,371.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.99 : 28,094.54 = 5,580.42 : x
  2. Step 2: Convert to fraction form
    18,726.99/28,094.54 = 5,580.42/x
  3. Step 3: Cross multiply
    18,726.99x = 28,094.54 × 5,580.42
  4. Step 4: Simplify right side
    18,726.99x = 156,779,305.00
  5. Step 5: Solve for x
    x = 156,779,305.00/18,726.99
  6. Step 6: Final answer
    x = 8,371.84

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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.