Home / 12,656.49-18,985.65-3,650.23

Finding the Fourth Proportional to 12,656.49, 18,985.65 and 3,650.23

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Solution

The fourth proportional to 12,656.49, 18,985.65 and 3,650.23 is: 5,475.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.49 : 18,985.65 = 3,650.23 : x
  2. Step 2: Convert to fraction form
    12,656.49/18,985.65 = 3,650.23/x
  3. Step 3: Cross multiply
    12,656.49x = 18,985.65 × 3,650.23
  4. Step 4: Simplify right side
    12,656.49x = 69,301,989.20
  5. Step 5: Solve for x
    x = 69,301,989.20/12,656.49
  6. Step 6: Final answer
    x = 5,475.61

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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.