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Finding the Fourth Proportional to 14,690.92, 20,213.40 and 12,695.08

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Solution

The fourth proportional to 14,690.92, 20,213.40 and 12,695.08 is: 17,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,690.92 : 20,213.40 = 12,695.08 : x
  2. Step 2: Convert to fraction form
    14,690.92/20,213.40 = 12,695.08/x
  3. Step 3: Cross multiply
    14,690.92x = 20,213.40 × 12,695.08
  4. Step 4: Simplify right side
    14,690.92x = 256,610,730.07
  5. Step 5: Solve for x
    x = 256,610,730.07/14,690.92
  6. Step 6: Final answer
    x = 17,467.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.