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Finding the Fourth Proportional to 21,656.60, 32,480.04 and 9,958.58

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Solution

The fourth proportional to 21,656.60, 32,480.04 and 9,958.58 is: 14,935.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.60 : 32,480.04 = 9,958.58 : x
  2. Step 2: Convert to fraction form
    21,656.60/32,480.04 = 9,958.58/x
  3. Step 3: Cross multiply
    21,656.60x = 32,480.04 × 9,958.58
  4. Step 4: Simplify right side
    21,656.60x = 323,455,076.74
  5. Step 5: Solve for x
    x = 323,455,076.74/21,656.60
  6. Step 6: Final answer
    x = 14,935.64

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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.