Home / 13,977.90-19,294-8,955.62

Finding the Fourth Proportional to 13,977.90, 19,294 and 8,955.62

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Solution

The fourth proportional to 13,977.90, 19,294 and 8,955.62 is: 12,361.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.90 : 19,294 = 8,955.62 : x
  2. Step 2: Convert to fraction form
    13,977.90/19,294 = 8,955.62/x
  3. Step 3: Cross multiply
    13,977.90x = 19,294 × 8,955.62
  4. Step 4: Simplify right side
    13,977.90x = 172,789,732.28
  5. Step 5: Solve for x
    x = 172,789,732.28/13,977.90
  6. Step 6: Final answer
    x = 12,361.64

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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.