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Finding the Fourth Proportional to 18,673.60, 28,011.12 and 4,822.24

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Solution

The fourth proportional to 18,673.60, 28,011.12 and 4,822.24 is: 7,233.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.60 : 28,011.12 = 4,822.24 : x
  2. Step 2: Convert to fraction form
    18,673.60/28,011.12 = 4,822.24/x
  3. Step 3: Cross multiply
    18,673.60x = 28,011.12 × 4,822.24
  4. Step 4: Simplify right side
    18,673.60x = 135,076,343.31
  5. Step 5: Solve for x
    x = 135,076,343.31/18,673.60
  6. Step 6: Final answer
    x = 7,233.55

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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.