Home / 12,628.68-18,939.87-5,235.18

Finding the Fourth Proportional to 12,628.68, 18,939.87 and 5,235.18

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Solution

The fourth proportional to 12,628.68, 18,939.87 and 5,235.18 is: 7,851.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.68 : 18,939.87 = 5,235.18 : x
  2. Step 2: Convert to fraction form
    12,628.68/18,939.87 = 5,235.18/x
  3. Step 3: Cross multiply
    12,628.68x = 18,939.87 × 5,235.18
  4. Step 4: Simplify right side
    12,628.68x = 99,153,628.63
  5. Step 5: Solve for x
    x = 99,153,628.63/12,628.68
  6. Step 6: Final answer
    x = 7,851.46

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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.