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Finding the Fourth Proportional to 14,404.20, 21,606.30 and 14,258.40

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Solution

The fourth proportional to 14,404.20, 21,606.30 and 14,258.40 is: 21,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,404.20 : 21,606.30 = 14,258.40 : x
  2. Step 2: Convert to fraction form
    14,404.20/21,606.30 = 14,258.40/x
  3. Step 3: Cross multiply
    14,404.20x = 21,606.30 × 14,258.40
  4. Step 4: Simplify right side
    14,404.20x = 308,071,267.92
  5. Step 5: Solve for x
    x = 308,071,267.92/14,404.20
  6. Step 6: Final answer
    x = 21,387.60

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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.