Home / 30,787.90-42,486.45-17,359.04

Finding the Fourth Proportional to 30,787.90, 42,486.45 and 17,359.04

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Solution

The fourth proportional to 30,787.90, 42,486.45 and 17,359.04 is: 23,954.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,787.90 : 42,486.45 = 17,359.04 : x
  2. Step 2: Convert to fraction form
    30,787.90/42,486.45 = 17,359.04/x
  3. Step 3: Cross multiply
    30,787.90x = 42,486.45 × 17,359.04
  4. Step 4: Simplify right side
    30,787.90x = 737,523,985.01
  5. Step 5: Solve for x
    x = 737,523,985.01/30,787.90
  6. Step 6: Final answer
    x = 23,954.99

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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.