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Finding the Fourth Proportional to 12,904.60, 19,332.60 and 6,643.30

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Solution

The fourth proportional to 12,904.60, 19,332.60 and 6,643.30 is: 9,952.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.60 : 19,332.60 = 6,643.30 : x
  2. Step 2: Convert to fraction form
    12,904.60/19,332.60 = 6,643.30/x
  3. Step 3: Cross multiply
    12,904.60x = 19,332.60 × 6,643.30
  4. Step 4: Simplify right side
    12,904.60x = 128,432,261.58
  5. Step 5: Solve for x
    x = 128,432,261.58/12,904.60
  6. Step 6: Final answer
    x = 9,952.44

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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.