Home / 12,206.91-18,309.24-4,307.76

Finding the Fourth Proportional to 12,206.91, 18,309.24 and 4,307.76

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Solution

The fourth proportional to 12,206.91, 18,309.24 and 4,307.76 is: 6,461.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.91 : 18,309.24 = 4,307.76 : x
  2. Step 2: Convert to fraction form
    12,206.91/18,309.24 = 4,307.76/x
  3. Step 3: Cross multiply
    12,206.91x = 18,309.24 × 4,307.76
  4. Step 4: Simplify right side
    12,206.91x = 78,871,811.70
  5. Step 5: Solve for x
    x = 78,871,811.70/12,206.91
  6. Step 6: Final answer
    x = 6,461.24

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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.