Home / 12,488.74-17,230.58-7,110.78

Finding the Fourth Proportional to 12,488.74, 17,230.58 and 7,110.78

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Solution

The fourth proportional to 12,488.74, 17,230.58 and 7,110.78 is: 9,810.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.74 : 17,230.58 = 7,110.78 : x
  2. Step 2: Convert to fraction form
    12,488.74/17,230.58 = 7,110.78/x
  3. Step 3: Cross multiply
    12,488.74x = 17,230.58 × 7,110.78
  4. Step 4: Simplify right side
    12,488.74x = 122,522,863.65
  5. Step 5: Solve for x
    x = 122,522,863.65/12,488.74
  6. Step 6: Final answer
    x = 9,810.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.