Home / 30,812.92-42,511.98-18,235.24

Finding the Fourth Proportional to 30,812.92, 42,511.98 and 18,235.24

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Solution

The fourth proportional to 30,812.92, 42,511.98 and 18,235.24 is: 25,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812.92 : 42,511.98 = 18,235.24 : x
  2. Step 2: Convert to fraction form
    30,812.92/42,511.98 = 18,235.24/x
  3. Step 3: Cross multiply
    30,812.92x = 42,511.98 × 18,235.24
  4. Step 4: Simplify right side
    30,812.92x = 775,216,158.18
  5. Step 5: Solve for x
    x = 775,216,158.18/30,812.92
  6. Step 6: Final answer
    x = 25,158.80

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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.