Home / 32,730.12-45,171.78-19,980.63

Finding the Fourth Proportional to 32,730.12, 45,171.78 and 19,980.63

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Solution

The fourth proportional to 32,730.12, 45,171.78 and 19,980.63 is: 27,575.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,730.12 : 45,171.78 = 19,980.63 : x
  2. Step 2: Convert to fraction form
    32,730.12/45,171.78 = 19,980.63/x
  3. Step 3: Cross multiply
    32,730.12x = 45,171.78 × 19,980.63
  4. Step 4: Simplify right side
    32,730.12x = 902,560,622.62
  5. Step 5: Solve for x
    x = 902,560,622.62/32,730.12
  6. Step 6: Final answer
    x = 27,575.84

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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.