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Finding the Fourth Proportional to 21,358.60, 32,037.60 and 9,671.80

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Solution

The fourth proportional to 21,358.60, 32,037.60 and 9,671.80 is: 14,507.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.60 : 32,037.60 = 9,671.80 : x
  2. Step 2: Convert to fraction form
    21,358.60/32,037.60 = 9,671.80/x
  3. Step 3: Cross multiply
    21,358.60x = 32,037.60 × 9,671.80
  4. Step 4: Simplify right side
    21,358.60x = 309,861,259.68
  5. Step 5: Solve for x
    x = 309,861,259.68/21,358.60
  6. Step 6: Final answer
    x = 14,507.56

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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.