Home / 30,965.03-42,731.03-16,817.57

Finding the Fourth Proportional to 30,965.03, 42,731.03 and 16,817.57

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Solution

The fourth proportional to 30,965.03, 42,731.03 and 16,817.57 is: 23,207.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.03 : 42,731.03 = 16,817.57 : x
  2. Step 2: Convert to fraction form
    30,965.03/42,731.03 = 16,817.57/x
  3. Step 3: Cross multiply
    30,965.03x = 42,731.03 × 16,817.57
  4. Step 4: Simplify right side
    30,965.03x = 718,631,916.59
  5. Step 5: Solve for x
    x = 718,631,916.59/30,965.03
  6. Step 6: Final answer
    x = 23,207.86

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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.