Home / 30,813.15-42,522.15-16,665.99

Finding the Fourth Proportional to 30,813.15, 42,522.15 and 16,665.99

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Solution

The fourth proportional to 30,813.15, 42,522.15 and 16,665.99 is: 22,999.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,813.15 : 42,522.15 = 16,665.99 : x
  2. Step 2: Convert to fraction form
    30,813.15/42,522.15 = 16,665.99/x
  3. Step 3: Cross multiply
    30,813.15x = 42,522.15 × 16,665.99
  4. Step 4: Simplify right side
    30,813.15x = 708,673,743.91
  5. Step 5: Solve for x
    x = 708,673,743.91/30,813.15
  6. Step 6: Final answer
    x = 22,999.07

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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.