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Finding the Fourth Proportional to 14,054.60, 21,068.40 and 8,125.40

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Solution

The fourth proportional to 14,054.60, 21,068.40 and 8,125.40 is: 12,180.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,054.60 : 21,068.40 = 8,125.40 : x
  2. Step 2: Convert to fraction form
    14,054.60/21,068.40 = 8,125.40/x
  3. Step 3: Cross multiply
    14,054.60x = 21,068.40 × 8,125.40
  4. Step 4: Simplify right side
    14,054.60x = 171,189,177.36
  5. Step 5: Solve for x
    x = 171,189,177.36/14,054.60
  6. Step 6: Final answer
    x = 12,180.30

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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.