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Finding the Fourth Proportional to 18,807.60, 28,202.28 and 5,657.52

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Solution

The fourth proportional to 18,807.60, 28,202.28 and 5,657.52 is: 8,483.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.60 : 28,202.28 = 5,657.52 : x
  2. Step 2: Convert to fraction form
    18,807.60/28,202.28 = 5,657.52/x
  3. Step 3: Cross multiply
    18,807.60x = 28,202.28 × 5,657.52
  4. Step 4: Simplify right side
    18,807.60x = 159,554,963.15
  5. Step 5: Solve for x
    x = 159,554,963.15/18,807.60
  6. Step 6: Final answer
    x = 8,483.54

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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.