Home / 12,359.25-18,530.64-6,421.55

Finding the Fourth Proportional to 12,359.25, 18,530.64 and 6,421.55

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Solution

The fourth proportional to 12,359.25, 18,530.64 and 6,421.55 is: 9,628.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.25 : 18,530.64 = 6,421.55 : x
  2. Step 2: Convert to fraction form
    12,359.25/18,530.64 = 6,421.55/x
  3. Step 3: Cross multiply
    12,359.25x = 18,530.64 × 6,421.55
  4. Step 4: Simplify right side
    12,359.25x = 118,995,401.02
  5. Step 5: Solve for x
    x = 118,995,401.02/12,359.25
  6. Step 6: Final answer
    x = 9,628.04

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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.