Home / 12,482.40-18,718.56-4,686.96

Finding the Fourth Proportional to 12,482.40, 18,718.56 and 4,686.96

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Solution

The fourth proportional to 12,482.40, 18,718.56 and 4,686.96 is: 7,028.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.40 : 18,718.56 = 4,686.96 : x
  2. Step 2: Convert to fraction form
    12,482.40/18,718.56 = 4,686.96/x
  3. Step 3: Cross multiply
    12,482.40x = 18,718.56 × 4,686.96
  4. Step 4: Simplify right side
    12,482.40x = 87,733,141.98
  5. Step 5: Solve for x
    x = 87,733,141.98/12,482.40
  6. Step 6: Final answer
    x = 7,028.55

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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.