Home / 13,001.12-19,448.16-10,812.80

Finding the Fourth Proportional to 13,001.12, 19,448.16 and 10,812.80

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Solution

The fourth proportional to 13,001.12, 19,448.16 and 10,812.80 is: 16,174.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,001.12 : 19,448.16 = 10,812.80 : x
  2. Step 2: Convert to fraction form
    13,001.12/19,448.16 = 10,812.80/x
  3. Step 3: Cross multiply
    13,001.12x = 19,448.16 × 10,812.80
  4. Step 4: Simplify right side
    13,001.12x = 210,289,064.45
  5. Step 5: Solve for x
    x = 210,289,064.45/13,001.12
  6. Step 6: Final answer
    x = 16,174.69

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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.