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Finding the Fourth Proportional to 14,659.58, 21,985.13 and 7,158.51

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Solution

The fourth proportional to 14,659.58, 21,985.13 and 7,158.51 is: 10,735.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,659.58 : 21,985.13 = 7,158.51 : x
  2. Step 2: Convert to fraction form
    14,659.58/21,985.13 = 7,158.51/x
  3. Step 3: Cross multiply
    14,659.58x = 21,985.13 × 7,158.51
  4. Step 4: Simplify right side
    14,659.58x = 157,380,790.85
  5. Step 5: Solve for x
    x = 157,380,790.85/14,659.58
  6. Step 6: Final answer
    x = 10,735.69

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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.