Home / 13,089.84-19,586.16-7,899.36

Finding the Fourth Proportional to 13,089.84, 19,586.16 and 7,899.36

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Solution

The fourth proportional to 13,089.84, 19,586.16 and 7,899.36 is: 11,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.84 : 19,586.16 = 7,899.36 : x
  2. Step 2: Convert to fraction form
    13,089.84/19,586.16 = 7,899.36/x
  3. Step 3: Cross multiply
    13,089.84x = 19,586.16 × 7,899.36
  4. Step 4: Simplify right side
    13,089.84x = 154,718,128.86
  5. Step 5: Solve for x
    x = 154,718,128.86/13,089.84
  6. Step 6: Final answer
    x = 11,819.71

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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.