Home / 14,138.12-19,505.23-8,394.31

Finding the Fourth Proportional to 14,138.12, 19,505.23 and 8,394.31

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Solution

The fourth proportional to 14,138.12, 19,505.23 and 8,394.31 is: 11,580.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.12 : 19,505.23 = 8,394.31 : x
  2. Step 2: Convert to fraction form
    14,138.12/19,505.23 = 8,394.31/x
  3. Step 3: Cross multiply
    14,138.12x = 19,505.23 × 8,394.31
  4. Step 4: Simplify right side
    14,138.12x = 163,732,877.49
  5. Step 5: Solve for x
    x = 163,732,877.49/14,138.12
  6. Step 6: Final answer
    x = 11,580.95

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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.