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Finding the Fourth Proportional to 32,948.94, 45,489.16 and 20,390.70

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Solution

The fourth proportional to 32,948.94, 45,489.16 and 20,390.70 is: 28,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,948.94 : 45,489.16 = 20,390.70 : x
  2. Step 2: Convert to fraction form
    32,948.94/45,489.16 = 20,390.70/x
  3. Step 3: Cross multiply
    32,948.94x = 45,489.16 × 20,390.70
  4. Step 4: Simplify right side
    32,948.94x = 927,555,814.81
  5. Step 5: Solve for x
    x = 927,555,814.81/32,948.94
  6. Step 6: Final answer
    x = 28,151.31

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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.