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Finding the Fourth Proportional to 14,054.78, 21,071.78 and 8,506.90

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Solution

The fourth proportional to 14,054.78, 21,071.78 and 8,506.90 is: 12,754.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,054.78 : 21,071.78 = 8,506.90 : x
  2. Step 2: Convert to fraction form
    14,054.78/21,071.78 = 8,506.90/x
  3. Step 3: Cross multiply
    14,054.78x = 21,071.78 × 8,506.90
  4. Step 4: Simplify right side
    14,054.78x = 179,255,525.28
  5. Step 5: Solve for x
    x = 179,255,525.28/14,054.78
  6. Step 6: Final answer
    x = 12,754.06

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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.