Home / 30,920.11-42,669.76-17,491.08

Finding the Fourth Proportional to 30,920.11, 42,669.76 and 17,491.08

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Solution

The fourth proportional to 30,920.11, 42,669.76 and 17,491.08 is: 24,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,920.11 : 42,669.76 = 17,491.08 : x
  2. Step 2: Convert to fraction form
    30,920.11/42,669.76 = 17,491.08/x
  3. Step 3: Cross multiply
    30,920.11x = 42,669.76 × 17,491.08
  4. Step 4: Simplify right side
    30,920.11x = 746,339,972.39
  5. Step 5: Solve for x
    x = 746,339,972.39/30,920.11
  6. Step 6: Final answer
    x = 24,137.69

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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.