Home / 30,511.38-42,103.71-17,082.51

Finding the Fourth Proportional to 30,511.38, 42,103.71 and 17,082.51

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Solution

The fourth proportional to 30,511.38, 42,103.71 and 17,082.51 is: 23,572.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,511.38 : 42,103.71 = 17,082.51 : x
  2. Step 2: Convert to fraction form
    30,511.38/42,103.71 = 17,082.51/x
  3. Step 3: Cross multiply
    30,511.38x = 42,103.71 × 17,082.51
  4. Step 4: Simplify right side
    30,511.38x = 719,237,047.11
  5. Step 5: Solve for x
    x = 719,237,047.11/30,511.38
  6. Step 6: Final answer
    x = 23,572.75

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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.