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Finding the Fourth Proportional to 14,397.64, 21,596.05 and 7,865.20

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Solution

The fourth proportional to 14,397.64, 21,596.05 and 7,865.20 is: 11,797.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,397.64 : 21,596.05 = 7,865.20 : x
  2. Step 2: Convert to fraction form
    14,397.64/21,596.05 = 7,865.20/x
  3. Step 3: Cross multiply
    14,397.64x = 21,596.05 × 7,865.20
  4. Step 4: Simplify right side
    14,397.64x = 169,857,252.46
  5. Step 5: Solve for x
    x = 169,857,252.46/14,397.64
  6. Step 6: Final answer
    x = 11,797.58

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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.