Home / 12,428.18-18,628.74-6,192.80

Finding the Fourth Proportional to 12,428.18, 18,628.74 and 6,192.80

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Solution

The fourth proportional to 12,428.18, 18,628.74 and 6,192.80 is: 9,282.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.18 : 18,628.74 = 6,192.80 : x
  2. Step 2: Convert to fraction form
    12,428.18/18,628.74 = 6,192.80/x
  3. Step 3: Cross multiply
    12,428.18x = 18,628.74 × 6,192.80
  4. Step 4: Simplify right side
    12,428.18x = 115,363,967.93
  5. Step 5: Solve for x
    x = 115,363,967.93/12,428.18
  6. Step 6: Final answer
    x = 9,282.45

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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.