Home / 12,865.23-19,288.13-7,018.65

Finding the Fourth Proportional to 12,865.23, 19,288.13 and 7,018.65

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Solution

The fourth proportional to 12,865.23, 19,288.13 and 7,018.65 is: 10,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.23 : 19,288.13 = 7,018.65 : x
  2. Step 2: Convert to fraction form
    12,865.23/19,288.13 = 7,018.65/x
  3. Step 3: Cross multiply
    12,865.23x = 19,288.13 × 7,018.65
  4. Step 4: Simplify right side
    12,865.23x = 135,376,598.53
  5. Step 5: Solve for x
    x = 135,376,598.53/12,865.23
  6. Step 6: Final answer
    x = 10,522.67

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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.