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Finding the Fourth Proportional to 32,755.70, 45,210.14 and 20,816.70

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Solution

The fourth proportional to 32,755.70, 45,210.14 and 20,816.70 is: 28,731.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,755.70 : 45,210.14 = 20,816.70 : x
  2. Step 2: Convert to fraction form
    32,755.70/45,210.14 = 20,816.70/x
  3. Step 3: Cross multiply
    32,755.70x = 45,210.14 × 20,816.70
  4. Step 4: Simplify right side
    32,755.70x = 941,125,817.25
  5. Step 5: Solve for x
    x = 941,125,817.25/32,755.70
  6. Step 6: Final answer
    x = 28,731.67

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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.