Home / 30,965.28-42,731.38-16,817.82

Finding the Fourth Proportional to 30,965.28, 42,731.38 and 16,817.82

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Solution

The fourth proportional to 30,965.28, 42,731.38 and 16,817.82 is: 23,208.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.28 : 42,731.38 = 16,817.82 : x
  2. Step 2: Convert to fraction form
    30,965.28/42,731.38 = 16,817.82/x
  3. Step 3: Cross multiply
    30,965.28x = 42,731.38 × 16,817.82
  4. Step 4: Simplify right side
    30,965.28x = 718,648,657.19
  5. Step 5: Solve for x
    x = 718,648,657.19/30,965.28
  6. Step 6: Final answer
    x = 23,208.21

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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.