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Finding the Fourth Proportional to 12,807.20, 19,210.79 and 3,573.20

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Solution

The fourth proportional to 12,807.20, 19,210.79 and 3,573.20 is: 5,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.20 : 19,210.79 = 3,573.20 : x
  2. Step 2: Convert to fraction form
    12,807.20/19,210.79 = 3,573.20/x
  3. Step 3: Cross multiply
    12,807.20x = 19,210.79 × 3,573.20
  4. Step 4: Simplify right side
    12,807.20x = 68,643,880.91
  5. Step 5: Solve for x
    x = 68,643,880.91/12,807.20
  6. Step 6: Final answer
    x = 5,359.79

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Half scale
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Double scale
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Similar ratio
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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.