Home / 12,650.95-18,988.04-6,415.30

Finding the Fourth Proportional to 12,650.95, 18,988.04 and 6,415.30

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Solution

The fourth proportional to 12,650.95, 18,988.04 and 6,415.30 is: 9,628.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.95 : 18,988.04 = 6,415.30 : x
  2. Step 2: Convert to fraction form
    12,650.95/18,988.04 = 6,415.30/x
  3. Step 3: Cross multiply
    12,650.95x = 18,988.04 × 6,415.30
  4. Step 4: Simplify right side
    12,650.95x = 121,813,973.01
  5. Step 5: Solve for x
    x = 121,813,973.01/12,650.95
  6. Step 6: Final answer
    x = 9,628.84

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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.