Home / 12,664.95-17,478.30-7,630.76

Finding the Fourth Proportional to 12,664.95, 17,478.30 and 7,630.76

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Solution

The fourth proportional to 12,664.95, 17,478.30 and 7,630.76 is: 10,530.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.95 : 17,478.30 = 7,630.76 : x
  2. Step 2: Convert to fraction form
    12,664.95/17,478.30 = 7,630.76/x
  3. Step 3: Cross multiply
    12,664.95x = 17,478.30 × 7,630.76
  4. Step 4: Simplify right side
    12,664.95x = 133,372,625.12
  5. Step 5: Solve for x
    x = 133,372,625.12/12,664.95
  6. Step 6: Final answer
    x = 10,530.84

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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.