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Finding the Fourth Proportional to 21,889.60, 32,834.40 and 14,891.20

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Solution

The fourth proportional to 21,889.60, 32,834.40 and 14,891.20 is: 22,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.60 : 32,834.40 = 14,891.20 : x
  2. Step 2: Convert to fraction form
    21,889.60/32,834.40 = 14,891.20/x
  3. Step 3: Cross multiply
    21,889.60x = 32,834.40 × 14,891.20
  4. Step 4: Simplify right side
    21,889.60x = 488,943,617.28
  5. Step 5: Solve for x
    x = 488,943,617.28/21,889.60
  6. Step 6: Final answer
    x = 22,336.80

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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.