Home / 13,238.21-19,836.81-10,457.99

Finding the Fourth Proportional to 13,238.21, 19,836.81 and 10,457.99

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Solution

The fourth proportional to 13,238.21, 19,836.81 and 10,457.99 is: 15,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.21 : 19,836.81 = 10,457.99 : x
  2. Step 2: Convert to fraction form
    13,238.21/19,836.81 = 10,457.99/x
  3. Step 3: Cross multiply
    13,238.21x = 19,836.81 × 10,457.99
  4. Step 4: Simplify right side
    13,238.21x = 207,453,061.43
  5. Step 5: Solve for x
    x = 207,453,061.43/13,238.21
  6. Step 6: Final answer
    x = 15,670.78

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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.