Home / 12,607.20-18,891.60-10,648.80

Finding the Fourth Proportional to 12,607.20, 18,891.60 and 10,648.80

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Solution

The fourth proportional to 12,607.20, 18,891.60 and 10,648.80 is: 15,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.20 : 18,891.60 = 10,648.80 : x
  2. Step 2: Convert to fraction form
    12,607.20/18,891.60 = 10,648.80/x
  3. Step 3: Cross multiply
    12,607.20x = 18,891.60 × 10,648.80
  4. Step 4: Simplify right side
    12,607.20x = 201,172,870.08
  5. Step 5: Solve for x
    x = 201,172,870.08/12,607.20
  6. Step 6: Final answer
    x = 15,956.98

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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.