Home / 12,905.40-19,355.40-6,336.30

Finding the Fourth Proportional to 12,905.40, 19,355.40 and 6,336.30

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Solution

The fourth proportional to 12,905.40, 19,355.40 and 6,336.30 is: 9,503.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.40 : 19,355.40 = 6,336.30 : x
  2. Step 2: Convert to fraction form
    12,905.40/19,355.40 = 6,336.30/x
  3. Step 3: Cross multiply
    12,905.40x = 19,355.40 × 6,336.30
  4. Step 4: Simplify right side
    12,905.40x = 122,641,621.02
  5. Step 5: Solve for x
    x = 122,641,621.02/12,905.40
  6. Step 6: Final answer
    x = 9,503.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.