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Finding the Fourth Proportional to 14,281.60, 21,422.40 and 14,038.60

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Solution

The fourth proportional to 14,281.60, 21,422.40 and 14,038.60 is: 21,057.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,281.60 : 21,422.40 = 14,038.60 : x
  2. Step 2: Convert to fraction form
    14,281.60/21,422.40 = 14,038.60/x
  3. Step 3: Cross multiply
    14,281.60x = 21,422.40 × 14,038.60
  4. Step 4: Simplify right side
    14,281.60x = 300,740,504.64
  5. Step 5: Solve for x
    x = 300,740,504.64/14,281.60
  6. Step 6: Final answer
    x = 21,057.90

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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.