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Finding the Fourth Proportional to 32,940.60, 45,463.02 and 21,008.76

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Solution

The fourth proportional to 32,940.60, 45,463.02 and 21,008.76 is: 28,995.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,940.60 : 45,463.02 = 21,008.76 : x
  2. Step 2: Convert to fraction form
    32,940.60/45,463.02 = 21,008.76/x
  3. Step 3: Cross multiply
    32,940.60x = 45,463.02 × 21,008.76
  4. Step 4: Simplify right side
    32,940.60x = 955,121,676.06
  5. Step 5: Solve for x
    x = 955,121,676.06/32,940.60
  6. Step 6: Final answer
    x = 28,995.27

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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.