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Finding the Fourth Proportional to 32,865, 45,353.70 and 21,109.48

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Solution

The fourth proportional to 32,865, 45,353.70 and 21,109.48 is: 29,131.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,865 : 45,353.70 = 21,109.48 : x
  2. Step 2: Convert to fraction form
    32,865/45,353.70 = 21,109.48/x
  3. Step 3: Cross multiply
    32,865x = 45,353.70 × 21,109.48
  4. Step 4: Simplify right side
    32,865x = 957,393,023.08
  5. Step 5: Solve for x
    x = 957,393,023.08/32,865
  6. Step 6: Final answer
    x = 29,131.08

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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.