Home / 30,581.92-42,205.84-18,645.92

Finding the Fourth Proportional to 30,581.92, 42,205.84 and 18,645.92

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Solution

The fourth proportional to 30,581.92, 42,205.84 and 18,645.92 is: 25,733.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.92 : 42,205.84 = 18,645.92 : x
  2. Step 2: Convert to fraction form
    30,581.92/42,205.84 = 18,645.92/x
  3. Step 3: Cross multiply
    30,581.92x = 42,205.84 × 18,645.92
  4. Step 4: Simplify right side
    30,581.92x = 786,966,716.17
  5. Step 5: Solve for x
    x = 786,966,716.17/30,581.92
  6. Step 6: Final answer
    x = 25,733.07

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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.