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Finding the Fourth Proportional to 32,754.68, 45,208.76 and 20,815.70

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Solution

The fourth proportional to 32,754.68, 45,208.76 and 20,815.70 is: 28,730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,754.68 : 45,208.76 = 20,815.70 : x
  2. Step 2: Convert to fraction form
    32,754.68/45,208.76 = 20,815.70/x
  3. Step 3: Cross multiply
    32,754.68x = 45,208.76 × 20,815.70
  4. Step 4: Simplify right side
    32,754.68x = 941,051,985.53
  5. Step 5: Solve for x
    x = 941,051,985.53/32,754.68
  6. Step 6: Final answer
    x = 28,730.31

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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.