Home / 12,570.18-18,855.78-4,674.78

Finding the Fourth Proportional to 12,570.18, 18,855.78 and 4,674.78

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Solution

The fourth proportional to 12,570.18, 18,855.78 and 4,674.78 is: 7,012.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570.18 : 18,855.78 = 4,674.78 : x
  2. Step 2: Convert to fraction form
    12,570.18/18,855.78 = 4,674.78/x
  3. Step 3: Cross multiply
    12,570.18x = 18,855.78 × 4,674.78
  4. Step 4: Simplify right side
    12,570.18x = 88,146,623.23
  5. Step 5: Solve for x
    x = 88,146,623.23/12,570.18
  6. Step 6: Final answer
    x = 7,012.36

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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.