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Finding the Fourth Proportional to 12,630.32, 17,430 and 7,325.36

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Solution

The fourth proportional to 12,630.32, 17,430 and 7,325.36 is: 10,109.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.32 : 17,430 = 7,325.36 : x
  2. Step 2: Convert to fraction form
    12,630.32/17,430 = 7,325.36/x
  3. Step 3: Cross multiply
    12,630.32x = 17,430 × 7,325.36
  4. Step 4: Simplify right side
    12,630.32x = 127,681,024.80
  5. Step 5: Solve for x
    x = 127,681,024.80/12,630.32
  6. Step 6: Final answer
    x = 10,109.09

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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.