Home / 30,813.89-42,522.47-17,384.79

Finding the Fourth Proportional to 30,813.89, 42,522.47 and 17,384.79

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Solution

The fourth proportional to 30,813.89, 42,522.47 and 17,384.79 is: 23,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,813.89 : 42,522.47 = 17,384.79 : x
  2. Step 2: Convert to fraction form
    30,813.89/42,522.47 = 17,384.79/x
  3. Step 3: Cross multiply
    30,813.89x = 42,522.47 × 17,384.79
  4. Step 4: Simplify right side
    30,813.89x = 739,244,348.96
  5. Step 5: Solve for x
    x = 739,244,348.96/30,813.89
  6. Step 6: Final answer
    x = 23,990.62

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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.