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Finding the Fourth Proportional to 30,397.44, 45,612.21 and 21,569.81

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Solution

The fourth proportional to 30,397.44, 45,612.21 and 21,569.81 is: 32,366.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,397.44 : 45,612.21 = 21,569.81 : x
  2. Step 2: Convert to fraction form
    30,397.44/45,612.21 = 21,569.81/x
  3. Step 3: Cross multiply
    30,397.44x = 45,612.21 × 21,569.81
  4. Step 4: Simplify right side
    30,397.44x = 983,846,434.88
  5. Step 5: Solve for x
    x = 983,846,434.88/30,397.44
  6. Step 6: Final answer
    x = 32,366.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.