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Finding the Fourth Proportional to 18,897.56, 28,349.44 and 5,746.88

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Solution

The fourth proportional to 18,897.56, 28,349.44 and 5,746.88 is: 8,621.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.56 : 28,349.44 = 5,746.88 : x
  2. Step 2: Convert to fraction form
    18,897.56/28,349.44 = 5,746.88/x
  3. Step 3: Cross multiply
    18,897.56x = 28,349.44 × 5,746.88
  4. Step 4: Simplify right side
    18,897.56x = 162,920,829.75
  5. Step 5: Solve for x
    x = 162,920,829.75/18,897.56
  6. Step 6: Final answer
    x = 8,621.26

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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.