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Finding the Fourth Proportional to 30,863.70, 42,591.93 and 17,434.98

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Solution

The fourth proportional to 30,863.70, 42,591.93 and 17,434.98 is: 24,060.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,863.70 : 42,591.93 = 17,434.98 : x
  2. Step 2: Convert to fraction form
    30,863.70/42,591.93 = 17,434.98/x
  3. Step 3: Cross multiply
    30,863.70x = 42,591.93 × 17,434.98
  4. Step 4: Simplify right side
    30,863.70x = 742,589,447.71
  5. Step 5: Solve for x
    x = 742,589,447.71/30,863.70
  6. Step 6: Final answer
    x = 24,060.29

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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.